But why "hate" them?
Is it because they were/are popular? You said you hate Bieber and then you insulted him. Why? I don't understand the hate for someone who hasn't done anything wrong, in fact, many people actually enjoy his music.
It sounds really emo to hate on someone cause of their popularity, and if it isn't because of the popularity, then you would have to hate him for a personal reason, which since I assume you know nothing about him as a person, you can't do.
If you hate him cause of his style of music, that's also pretty emo or just wrong, hating someone cause they sing a style of music that doesn't entertain you.
I just don't understand people's hate/love about bands/artists. It's just music.