My comment about the 50mm focal length is from hearing a lot of people in various venues (including a few forums *cough*photo.net*cough) convinced that you can't do anything well with the 50mm lens. It isn't long enough for some, isn't wide enough for others. Some don't like that it doesn't zoom. Maybe other people don't think it looks cool enough. I'm not really sure, really. But there is definitely a bias against the 50mm lens among certain people.
Not me, though.
*strokes his 50/1.2*