Recently I saw an interesting point being brought up, being that the biggest enemies of men are themselves and that women don't really care about many things men feel insecure about. A few examples:

Penis size: most women don't care about penis size and most don't want big penises because they hurt. It's men and their porn obsession that makes them insecure.

Virginity: most women don't care if a guy is a virgin, some even like it. It's men who shame other men about their sexual history and partner count.

Height: most women don't care about height as long as the guy isn't shorter than them.

Displaying emotions: men call each other pussies and say they're acting like "girls" if they show any emotion that isn't anger.

So do men feel insecure mostly because of other men or because of women?