I don't hang in the women's bathrooms, but from what I've heard from the people that do, you're much more likely to have assholes with vaginas peeing all over the seats.

A man can, and typically will, lift the seat if he feels the need to stand to pee. As I understand it, women won't lift the seat to hover-pee.

As a man who is absolutely exhausted from life, I don't know why anyone would stand when they can sit, whether it's peeing, working, reading a book, whatever.