I like it when men cry
Isn't that cruel? Why would you like that?
When a man cry is pretty erotic
It's rude to make someone cry just because you find it erotic. You don't always get to choose what you find attractive but you should be doing your best to not make people cry.
Why is that so bad. If they are ugly while they cry it's even better.
I understand that you might have a fetish, but I believe it's not a good thing to take advantage of them when they are sad. They are allowed to cry in peace without judging. I think that should be kept to yourself, until you have a partner who accepts it and is willing to do those things for you.