you are not better than anyone because you don’t like “mainstream” music
go ahead and not like those things
but it doesn’t give you the right to critisize what other people like.
I don’t listen to Justin Bieber, but I’m not going to go around and call everyone who likes him an “idiot” or tell them they have horrible music taste.
just because they don’t have your music taste doesn’t make them have bad music taste
it just means they have different music taste than you
shut up and sit down