I think even men should shave their legs and pits....and be at least trim in other areas. I've never been able to enforce that on any though.
I shave my arm-pits sometimes :waves:
I just generally see body hair as a bit gross. I mean, its a well known fact that hair traps smells. If I am going down on a girl, I don't want my face in loads of smelly hair!
There is also another simple hygiene thing to consider- no pubic hair = no chance of crabs/lice. Maybe the reason many people prefer less hair is that we have a bit of an evolutionary psychology based preference for less hair because of this health-factor?