They often have "other reasons" people put up with it - even just being the office attack dog you sic on annoying customers will make you a valuable team member.

Some ugly people are mean because they are ugly and take their frustrations out on the world.

Some pretty people are mean because they can get away with it and never learned that it's often counterproductive in the long term.

This is just some people, others act differently.

In my opinion, a lot of ugly people start off by trying to be nice, then gradually become more bitter and cynical the more they have to take shit from other people. At least I feel like that has happened to me, and I'm not even so ugly (imho). The amount of gaslighting I've put up with from everyone over the years has really been infuriating and has led me to a lot of misery in my life, and also turned me away from the things that might have actually made a difference.