I wish I had an imp said:
Yeah, I do listen to independent music (Arkells, Modest Mouse, the Gaslight Anthem are a few examples), but I just don't understand how people can eat up garbage that keeps popping up like weeds only because it's what everyone else listens to
Because they like it? Everyone has different tastes, man. There's a reason it's "mainstream", because a lot of people enjoy it. Not everyone does it to follow a trend, and you shouldn't generalize as such.
My favorite bands are Primus, Electric Six and The Who. I also like Lady GaGa, Nickelback, and 3 Doors Down. Does that make me a worse person, or that the music is garbage, because it's popular?