I don't think it's about being a homophobe ( although for some it is ) so much as just being a guy thing in general. Call it image, or just call it not wanting to get that close to another guy
but unless there is some big time emergency Im definitely not comfortable doing it.
Chicks aren't afraid to get up close and personal with each other, be all touchy feely and whatnot either because it's their preference to be with women or just because they are just cool with being that close to other females in general but for guys, most of the time IMO, we just don't do that sort of thing. Fear of being labled? maybe but mostly because it's just freekin gross...LOL