When I was younger my father would tell me to eat this and that to put hair on my chest; and I always thought, "WHY THE FUCK DO I WANT HAIR ON MY CHEST!" Even before I had any thought of the roles of men and women in society I thought it was stupid. Then when I discovered the whole "men hunt deer, women cook" business *BANGS CHEST LIKE MONKEY*, I thought it was even more stupid. This is even before it became uncool to be sexist.
Personally, I think it looks stupid, and it offers near to nothing unless it actually compliments your physical appearance.