Of course you do realize for those of us who learned to focus manually and anticipate (gasp!), this entire conversation borders on the absurd.
While I can understand the need for AF in some situations, I can count the number of times I used it in my own work on one hand. Granted I don't shoot sports but c'mon, are you really willing to let your ability to make a compelling image depend on the focusing system above all else?
That's a good question epatsellis. But, if you don't shoot sports, you're probably not aware of how amazing the newer AF bodies and lenses actually are. I grew up in the manual focus era,and the biggest difference there is that the viewfinder screens were coarser, and film SLR's reflected almost 100 percent of the light that hit the mirror, upward and to the viewfinder screen and then the pentaprism. The viewfinder images were HUGE compared with the crop-body Canon 1D-series bodies (the 1.3x models) and the Nikon D1 and D2 series bodies. Now, one HUGE difference is that the newer AF cameras siphon off as much as 40 percent of the incoming light: the mirrors are now roughly 60/40 reflective/transmissive. The AF systems receive their smaller amount of light right THROUGH the mirror, and that is how the AF systems get their input, when the mirror is down; the other 60 percent or so of the light goes up, to the screen, and to the prism, and then your eye. TO compensate for the 40% loss of light to the AF sensors located in the bottom of the mirror box, at the bottom, the camera makers have gone with viewfinder screens that are HUGELY brighter than in the F2/F3 era you and I grew up in. It's not just "the focusing system" one decides upon here in the D3s vs 1D mark IV--it is the lenses, the flashes, the sensor, and the entire imaging chain---a d-slr is film and camera all in one. Unlike film shooters, once you buy the camera, it is permanent. No "different films".
This discussion is not about the focusing system, except for those who want to shoot op to 21st Century expectations, and not those of the 1980's or 1990's.
Let's put it this way: if you've shot sports on assignment, and I have, for any publication within the last few years, you'd be a fool not to buy an AF camera. The days of manual focusing are basically over for the most part--the cameras are worse than 1970's and 1980's bodies for manually focusing, due to the partially-transmissive mirrors. The viewfinder screens are optimized for rather slow lenses, so the coarse, contrasty SNAP! in- or out of focus of an old Nikon F2 or F3 is long-gone. The viewfinder screens now show depth of field equivalent to around f/4.8 (this is a fact, and I have stats and quotes from Canon's Chuck Westfall,and other experts). You're old enough to recall the Olympus OM series vs the Nikon F series "wars"; a brighter viewfinder screen,even a magnified one is not always easier to achieve focus than a darker, dimmer screen that has just the right optimization. The Olympus OM-1 and OM-2 had larger,brighter viewfinder screens than Nikons and Canons for over a decade--but the Canon and Nikon cameras had coarser focusing screens that were darker, lower magnification, but much more contrasty, and which were actually easier to manually focus with accuracy and repeatability. One thing the human eye and brain are superb at, is spotting something that is *different*. Coarser,more-contrasty viewfinder focusing screens in older bodies, like Nikon F3, were about the very pinnacle of manual focusing. The FE-2 series had a nice finder too.
So, where is this going? Well, I'll tell you. If you use manual focusing lenses, which have rather long focus throws, manual focusing is reasonably easy on the best of the best bodies, like the Nikon D1-D2-D3 series. But consumer bodies today have lower-grade finders. And ALL AF bodies have much light lost through the mirror, with anything mounted. The viewfinder screens on AF bodies are optimized for automatic focusing and so are the newer AF lenses, which have extremely short focusing throws from Infinity on in to about 2 meters; that makes modern AF lenses extremely hair-trigger when focusing at typical sports distances of 200,150,100,75,50,40,30,20 feet; a modern AF lens traverses the Infinity to 2 meter distance in as little as 20 degrees of focusing ring travel. A mere human can not focus an 300mm f/4 AF-S Nikkor by hand and eye on an autofocus body with anywhwere NEAR the same degree of speed,accuracy,and repeatability of the much-older 300mm f/4.5 ED-IF Nikkor of the 1980's--I know. I shot the 300/4.5 ED-IF as a 20-something sports shooter in the later 1980's, and re-bought one a few years ago; it is a great manual focusing lens on an F3,and it is a pretty good manual focuser on a modern d-slr. The same with the contemporary top-gun, the 1976-designed 400mm f/3.5 ED-IF Nikkor, the world's fastest 400mm when it was premiered at the Montreal Olympics. On a top-level Nikon DX body like D1h or D2x, this old lens still focuses pretty well by hand and eye--because the lens has the perfect focusing system, designed to be focused by hand and eye; the throw is long and slow from Infinity to about 60 feet, then gets faster and faster, but it was designed as a spots/action lens, designed for a HUMAN to focus it. The modern 300/2.8 AF-S-II has a focus throw that goes from Infinity and immediately in to 5 meters, before you know it....the thing is damned near impossible to get reliable,accurate,repeatable MANUAL focus on a modern AF body--because it is optimized for a machine to focus!
Now seriously epatsellis, I've seen your 35mm lens collection photo. I own a lot of the same old Nikon Ai and Ai-S lenses you do. I've been a Nikon 35mm shooter since the early 80's. Autofocus since the mid-2000's has become much better than it was in the early 2000's. For daylight baseball, I have no issues shooting the 400/3.5 as a manual focus lens, and it's actually pretty good for track and field and daylight football too. Frame rates in manual focus are slower, but today's autofocusing lenses, even the big pro glass Nikkors and Canon L's, are NOT designed to manually focus--the lenses are optimized for a computer and a motor to focus, and 40% of the incoming light is being siphoned off on an AF body, and the viewfinder screen is now so smooth,and so bright, that there is almost no contrast!
The "effective" aperture of the most-recent viewfinder screens like that in the Canon 7D, is in the f/4.5 range. Do the test yourself with a wide-aperture prime: mount it and look thru the finder and stop the lens down: the "apparent" depth of field shown on the viewfinder screen, in a modern AF body, is that of the lens stopped down to around f/4.5 to f/4.8. That is a huge departure from manual focusing cameras designed decades ago. In a word, todays modern AF bodies from all manufacturers are sub-optimal for manual focusing. In a word, they "suck"; an F3HP or an old Canon F1-n from the mid-1980's has a BETTER viewfinder for manual focusing than a new top-tier d-slr that costs $5,000. Why? I've gone over it all above. Different eras. Prop plane. Jet aircraft. But why are crop-dusters old-school bi-planes?
I used manual focusing Nikon's for two decades. But today's AF bodies allow a sports shooter to shoot a pole vaulter running down the runway, and will autofocus and track the runner as he plants the pole and as he moves upward at an angle, and over the bar, and down. In the 1980's, the same type of focusing was achievable with only the ED-IF Nikkors; the old, helicoid-focusing, straight-tube 300/f 4.5 Ai Nikkor can NOT follow focus anywhere near as well as its Internal Focusing stablemates. Old manual focusing MF cameras can not deliver the same focusing speed on moving subjects as a modern d-slr. A jet is faster than a prop plane. If manual focusing lenses are used, manual focusing is easier on AF bodies than it is with an AF lens switched into manual focusing mode--because MF lenses were designed for manual focusing. I am intimately familiar with manual focusing 35mm,6x6 and 645--but those were all built with fully-silvered mirrors, not 60/40 reflective/transmissive mirrors. Cameras had viewfinder focusing screens,focusing helicoids or Internal Focus mechanisms, and pentaprisms--all were optimized for manually focusing with hand and eye.
You say you don't shoot sports. Well, today, "waiting and timing" is no longer good enough, because well, a new Canon or Nikon can shoot more than 36 frames at a go, and the cameras fire faster, and it's simply possible now to have very high hit rate AND sustained firing rate, where back in the 1980's on sports/long lens work you had to focus and frame and shoot, and as focus drifted you had to re-acquire it, shoot, focus a bit more...you know the drill. But that was the--this is now. Prop-driven DC-3 versus Boeing 737. The equipment is different. AF lenses are designed to have the fastest,often sloppiest, loosey-goosey AF travel you can imagine; the lowest degree of mechanical resistance is the goal of most AF lens designers. Why don't more airlines run propellor-driven, 50-passenger aircraft instead of small jets?
Sorry epatsellis, but the conversation does not border on the absurd for those living in this century,and who shoot action/sports/news/remote camera/remote trigger/high-speed photography where 21st century technology is in the hands of moms and dads. The days of the Nikon F3 and the Hasselblad 500 C series for action work are long,long over. Manual focusing lost its grip on the entire 35mm style camera industry in the early 1990's. Lenses changed. Camera viewscreens and mirrors changed. AF bodies, especially the lower-end pentamirror ones with 1.6x and 1.5x bodies are REALLY quite inferior as manual focusing tools. The old silky-smooth,long travel manual focusing lenses I (and you too!) learned and grew up on are long,long gone. Today's new AF cameras operate as fundamentally different tools than 1950's Medium format designs, or 1970's 35mm designs, and so on. It's hard to understand maybe if you do not shoot stuff where the priority is modern, digital images, shot with what are currently state-of-the-art tools. The slow,contemplative medium format and large format tripod-based stuff you're so good at is pretty different from people doing sports/action stuff. The old-style manual focus cameras, lenses, and viewing/focusing systems have been replaced.
If tomorrow I had to shoot a track meet on film, I have OLD lenses,50,85,135,180,200,300,and 400mm Nikkors from the 1980's that I would take and put on my F3-HP and MD-4 and an FE-2 and feel pretty confident I could get "usable shots" by using 30 years' experience overall and 15 years' uninterrupted use of those two camera models and their associated Motor Drives. I could do baseball with those cameras as well.
But I could NOT get as good a result using modern AF lenses on a modern d-slr--the OLDER manual focus lenses work best for manual focus. If I wanted to get the most good shots, with the highest chance for success on each and every race and event, on each and every shot opportunity, I would take a modern flagship d-slr, Canon or Nikon,and modern AF lenses, every single time. There is only "one heat" of the 100 meters at a dual meet, and it is over in less than 11 seconds. Less than 11 seconds, and most of the best shooting occurs in the last 5 seconds. AF kicks butt in the last 20 meters.
It's all well and good to talk about the absurdity of something that's not important to us, personally. But the cameras and lenses of the 60,70's,80's are long gone now. People used to telegraph. Then the phone was invented. Then the FAX machine. Then e-mail. Then texting. Cameras??? Manual focusing is so,so 1980's!

As an aside, I was watching a 2003 MMA fight with Noguerra and another fellow in Japan,and the ringside press guys were shooting film Nikons! I watched as one guy unloaded an F5,magic-markered something on the film can, then reloaded as fast as he could! That brought back memories of feeling terrified at frame 30 that something "big" might happen just after shot 36 was tripped!