Random members of the public that say they can tell the difference between 320Kbps CBR/V0 VBR and FLAC when listening on their smartphones. You can't, you won't ever, so stop pretending.
People who buy vinyl records because their "retro and cool" annoy the hell out of me. That is not a good reason to buy them.
Acoustic versions of songs are always better than the originals.
Dubstep is good. Stop hating it just because you think you have the worlds greatest taste in music. It's dynamic, interesting and a hell of a lot more enjoyable to listen to than a lot of other genre's.