Why are people so mean at Bars?

Why are people, especially men, so mean at bars? They’re always so hostile, and angry and mean, especially towards other men. It’s like we are here to have fun and have a good time and get away from this shitty planet, and it seems like all men want to do is get into problems. I try to always have a good time and be a kind person, but I always find myself attracting mean people when i’m out drinking. It really ruins my vibe and like ruins the night, any advice or tips to dealing with drunk rude assholes?