Notice that both the garbage bags and his face have the same sheen – squeaky clean and shining on the outside, and completely filthy within.
So, that which glitters might just be garbage.
I used to think that American psycho was a bullshit absurd movie, but man has it grown on me. I don’t think there has been a more nihilistic character on screen. Taxi Driver comes close, but misses Patrick Bateman by miles. I don’t know if anyone else has depicted a better destruction of a person’s belief system and their descent into meaningless nihilism and darkness as was done in this movie.