No one considers themselves a villain

"No one considers themselves a villain." - Popular phrase

As you grow older, it's easier to see that there are no good and bad people. Everyone has a different point of view, everyone is doing what they consider best, and depending on whose side you're on, you will label someone as good or bad.

It's very likely that you got hurt, not because that person wanted to make you suffer, but because they wanted to do what they considered best, even if it meant hurting you. Some other times, people hurt you and don't even notice, and you will hold a grudge against them for a long time, for something they never even knew.

"Listen to me, Thorfinn. You have no enemies. No one has any enemies. There is no one that you should hurt." - Makoto Yukimura, Vinland Saga