One thing I have noticed among my male peers is that the vast majority are very insecure about approaching the women they like, for countless reasons. I'm too ugly, I'm going to make an embarrassment of myself, she's going to think I'm creepy, I'm going to get rejected and look desperate...

Yes, all those things are true, but some guys simply stop caring about anyone else's opinions and do whatever they want, even if it makes others uncomfortable or confused. Those are the men women think about the most, because they're the only men that actually hit on them. The rest of guys either rarely approach or never do.

Which is precisely why being a selfish jerk often leads men to have more sex. I don't a shit about other people --> it's fine to interrupt their day and make them uncomfortable by hitting on them --> I hit on lots of women over the month --> at least a few say yes so I get laid. On the other hand, I care about other people and I'm afraid of bothering them --> I rarely hit on women because I think I will be annoying --> I rarely or never get laid.

But to be fair, women wouldn't be any braver if they suddenly woke up in a man's body. Think of all the men you meet across your week. What percentage do you wish you were hit on by? Imagine you were one of your male acquaintances. How often would you be brave enough to approach the women in your environment?