People pick on me for my music tastes? Why?

My friend, I know exactly how you feel. I'm 15 and I love Dean martin and Crosby and Sinatra and Davis Jr, and everyone I know including my family are always wondering why a teenage girl is obsessed with them. They're just stupid. Don't pay attention to them. And Justin Bieber Sucks. so does miley, ke$sha, and bruno mars. Sinatra and Martin had a much classier type of music that was better to listen to. So just know you aren't alone :)