People in general don't. But friends do not put their own desires ahead of their friends. If a person quits your game because they would not play a non-evil PC, then you are better off without them. They are not a friend or a decent person.
People sometimes have different interpretations of the rules or want different things out of games than other people at the table. That does not make them a bad person.
Someone could be a close friend and I simply don't run the style of game they want to play, I'm not going to shut them out of my life because our preferences in a single hobby differ.