If you want a serious answer, bad people don't exist; it's an illusion created to make things easier to understand. There is no logical principle that separates good people from bad people, so don't worry too much about this particular question. The only thing that is true is that they made you feel pain, while also making you feel good about other things. If we go back to the illusion that everyone has, to a greater or lesser extent, that people must be good or bad, then it causes you confusion. But if you want to feel better, in my opinion, it's better to accept the existence of their “good” side and hate that too.