Fine, be the rebel, make a huge deal about how you don't care what people think (although that's another overused trope).

But don't discount sound advice just because a stranger gave it to you. You're acting like a hipster or a goth, they bitch about popular music and reject any band that people have heard of, but really they're still letting other people's opinions define them just as much as the bandwagon rider who's endlessly jumping on the latest trends.