Is it ethical to eat plants or fungi? They're all alive.
I get pictures taken of me?
It could be argued that most people don't know how to handle emotions. Emotions as an underlying layer of oneself will get the better of them at one point or another. I don't like the idea of blame personally. It resolves nothing, what's more important is to try to rectify what has been done and help "the person of blame" so they are "smarter" in the area.
No. I don't agree. Hate doesn't need to be born from fear to exist. But these are complicated emotions, trying to boil them down to single words is almost silly.
All the time.
Happyness is gained from the self, it is bolstered by the others.
Joseph Joestar count?
Depends what we mean by hate. But I'm a great believer of opposites and equals. So for us to have great love, we must have great hate.