... and if men have more armpit hair and sweat and armpit surface area in general, then why don't men shave their underarms? Women do so because it's clean and looks much better than hairy pits, but why don't men do the same thing? Bushy pits are ugly, and the smell is too.

Everyone, women men, need to shave their pits. They need not shave their beards or chests or legs, because these areas don't generate BO. However, the pits do, and so do the nether parts.

Guys, ya gotsta start shaving, really. It doesn't make you gay, it makes you clean.
starofiniquity:
Both genders release pheromones from the underarms, so to say that men shouldn't shave on account of this, is it not a fair statement to say that women shouldn't shave either.

Btw, manly doesn't mean stinky. There's more to being a man than how hairy his pits are, or how much he smells. Actually, I'd rather avoid stank, lol.