... let me just make sure I re-empahsize that my question was directed to "beginnners".... I'm having a hard time believing that I'm the only one with less than a years experience in photography that doesn't use manual modes more than 90% of the time.
I'm seeing that many of you have professional acrediations, have been members of this site for years, and have your own photography websites... You aren't actually still "beginners" are you?
I'm confused as to why it matters whether a begginer is responding or someone else. As others have said, all that matters is that you get the shot. There are tons of beginners out there who claim to "shoot manual" only to find out that they are setting the camera where the meter tells them to. If that's the case, there's absolutely no reason to use full manual. Manual is useful in basically 2 situations:
1) When you're using a strobe, because the meter is going to go off the ambient light, not the strobe. Go to manual, set your aperture and shutter to what works creatively for you, and let the flash decide everything else.
2) When there's a scene or situation where you can't trust the meter. Snow scenes have been mentioned, I mentioned sunsets and sunrises. Bascially, if you think the meter is being confused, or you simply want total control over exposure.
If you are a beginner who claims to shoot manual, but really, you're just doing exactly what the meter tells you to do, do yourself a favor and go aperture or shutter priority. This is basically how you're using manual mode now, but this is a lot quicker.
As for the begginer comment, I learned shooting manual, but that was because of my camera. I learned on a Canon AE-1, which did have shutter priority (no aperture priority), but I rarely used it as I wanted my shutter set in relation to my aperture, not the other way around. Learning manual can be helpful, I suppose, but if you already understand exposure, there's little reason to shoot manual besides being able to say "I cn haz manual mode!"
EDIT: Just thought I'd add this. When I say manual, I am referring to M mode (on most cameras). I do not shoot "green square," scene modes, or P, and I really can't recommend those for anyone who actually wants to learn photography (though I'll switch my camera to those modes when I hand it to my wife when she wants to shoot, simply because she has no real interest to learn).