How come people say that my fiancee is going to end the engagement when she hears i like justin bieber's music?

Seriously all of this justin bieber hating is getting pretty ridicolous because I don't understand why people do this to me. There are other guys who listen to Justin Bieber and I don't know how they put up with people calling them names. People told me my fiancee in vietnam is going to end the engagement when she hears i like justin bieber's music, It's an arranged marriage and I don't think she's going to end it. She is a beautiful girl and she agreed to marry me. It's a culture tradition of vietnamese for parent to arrange an marriage, I had bad luck with girls at age 19. I'm Vietnamese and I live in the states, I'm in college. It's crazy because people hate on him just like they hated micheal jackson when he was alive, calling him a child molester. I only like about 3 of his songs out of all of them, all of his other songs are bad.