Bokeh doesn't make great pictures. Lots of times, wide apertures are just a simple way for beginners to remove an uninteresting background from a photo that would be mediocre if shot at, say, f/8.
Example (shot with a 645AF):
Composition is more than just blasting everything wide open.
So why not get 2 cheap lenses, and have the cheap best of both worlds? To say wide aperture is a simple way for beginners to remove a background could be true a lot of times... But then again "a lot of times" it is used for creativity, or bringing correct focus to your subject.
Wide aperture is probably the most used photographic "trait" in all of professional photography! Excluding landscape photography of course
Edit: p.s. I shoot landscape mostly, with a little macro.
Edit 2: I just saw your follow up comment, and I do agree completely.
Edited by Elmateo487 - 6/18/11 at 10:27pm