I think this is especially true of straight guys. For some stupid reason, careful attention to one's body is socially reserved for women, models, and gay men.
Maybe for the 30+ y/o brackets, but especially here in college it's completely acceptable to groom. My experience may be a little concentrated living in a fraternity house, but especially when you're on the prowl things need to be at least trimmed and a lot of the guys I've seen between Brothers in my house or locker rooms or whatever shave something other than their faces.
What's hilarious is the guys that leave their leg, chest, stomach, etc. hair but shave their pubes.