Is it worse to LIKE something because it IS popular?
Is it worse to NOT LIKE something because it is popular?
Either way, your opinion is based on the opinions on other people thus, not your own. You are still trying to project an image. Either that you "fit in" what a lot of people are talking about to portray a certain image or you don't like it because you don't want to like what EVERYONE else is liking in order to portray a certain image.
Either way, are you happy?!