I shoot pretty much entirely in raw and post process everything.
Me too.
I don't own a tablet and even if I did I'd still most likely not want to try to process images on it,
Me neither. And I'm defining "process" as editing or developing.
so before anything gets uploaded or shared anywhere I'll be putting it on the PC at home first and running it through photoshop.
Me too.
As a result the only thing Wifi would really do for me is make it so I wouldn't have to plug the little usb cable into the side of the camera to transfer the images to the PC. Not exactly a feature worth dropping much money on, at least not for my workflow.
And this is the "bigger picture" that I feel like you missed. I agree with absolutely everything you said, but it's what you
didn't say that's where the value of WiFi comes from. It's the rating / reviewing / rejecting / flagging / labeling.
The other day I was working with a model for a few hours and shot a few hundred images. When we finished, as I was packing my gear she reviewed all the images from the shoot on my iPad (Photosmith app). I told her, green label for your favorites, red label the ones you don't like at all. On the drive home I stopped for lunch. I took the iPad in with me and culled the entire shoot while I was sitting there and was able to start editing as soon as I got home.
Not too long ago I met up with several fellow photographers and we car pooled to a location shoot about an hour drive away. During the drive home (I was a passenger) I rated all of my images from the shoot and was able to start editing my selects as soon as I got home.
Frequently I'll get home from a shoot late and don't feel like sitting at my computer, I just want to watch TV for a bit before going to bed. But I have the option of grabbing the iPad and getting a head start on culling while I'm watching TV. Those are just a few examples but you get the idea.
My time is important to me and WiFi on a camera saves me literally
hours of time. This is real world, tangible, measurable, time I'm able to get back thanks to WiFi on my camera. All of that downtime spent traveling, flying, in airports, hotels, restaurants, etc is time that I can now spend rating and reviewing images so when I finally do return to my editing workstation I can focus on editing. My entire processing and image turnaround time is measurably faster now.
Obviously everyone's mileage will vary but WiFi on a camera is
SO much more than sharing and file transfers (I don't use it for either).