I think that, if someone believes in hate, that person won't ever be happy, because when that person looks at the world, he/she sees hate and the things he/she hates. If, maybe, instead, a person believes in love, that person can look at the world and see love and the things he/she loves, and through that, find happiness.
I think, through love, things can actually be fixed. Hate tends to destroy, but love tends to create. Hate is standing still while love is moving forward.
Or something.
IDK. I'm probably biased to my own world view, and this probably isn't anything that hasn't been said before. Anyway, I need to get myself into a state of mind where I can fall asleep...