There are plenty of things other than racism, sexism and homophobia that society sees as wrong. There are all sorts of do's and don'ts that we are expected to follow. I think it's ridiculous and stupid that people are expected to follow these rules, but it is 100 times more ridiculous and stupid that I would be expected to. Personally, I think that in a way I would be justified in pursuing my happiness even if it harmed others. Others deprived me of happiness, so why am I not justified in raining on their parade in order to pursue that happiness? Wouldn't it be perfectly fair?