As with most folks who've commented (surprisingly chill thread, by the way), I agree. I shoot weddings. My primary body and lens combo is a D700 and a 35/2. 35mm is by far and away my favorite focal length; pretty much everything I do at a wedding or e-session is with the combo above.
You can see as much at our
blog. My wife, for her part, uses a 50mm nearly exclusively on her D700 when we shoot together.
I don't visualize the shot before looking through the viewfinder, but I love the width I get with it as well as the ability to get up close and personal. I love the perspective distortion. It all just makes sense to me. It's also why I'm interested in an x100/s someday when I can justify owning one.
I know there are lots of folks who prefer switching lenses, using zooms, etc. I don't begrudge them. I just know it's simpler when I can use just one fixed lens and on one camera.
By the way, we went on vacation a few weeks ago. I didn't take any pro-bodies; I took a compact with a zoom lens (my wife's SD1100). I pretty much used it at its widest setting (~38mm) 99% of the time.
As an aside, I still have one of my earliest digital cameras. It's an FZ7, or a bridge camera from 2006. I took about 20,000 pictures with it before I got my first DSLR, and most of those pictures were bad. It wasn't until I got my first DSLR (a D3100 with a 50/1.8 manual lens) that I took the time to learn about aperture, shutter speed, etc.
However, years later, returning to that camera, I feel I have a much better handle on it. Why? Because I use it in manual and at the widest setting (~36mm). I think about composition when taking a picture. I use the rule of thirds. I zoom with my feet. It's basically a much more archaic version of the D700/35 combo when I pick it up now.
It's funny to think that I had to move to a newer camera to learn how to use an older one, but that's what happened with me. Of course, I could have learned all of these things on just the FZ7, but it wasn't until I bought a "serious" camera that I actually took the time to learn how to take pictures. Strange how things work.
So I guess my advice for anyone wanting to learn to take good pictures would be to...
1. buy a camera that can be used in manual settings and learn to shoot that way.
2. use only one lens or one focal length (wider is better) on the camera.
3. find "good" photography and figure out what you like about it.
4. go shoot what interests you.
If I'd had this advice and had followed it, I'd possibly be much farther along in my photography now than I am. But there's a good chance I wouldn't have listened anyway. When the student is ready, the teacher will appear and all that.