This movie is oddly compelling. I've seen it twice now, along with seeing bits and pieces when my roommates are watching it. I've finally decided what it is. The violence, sex, and humor (and yes, if you're sick enough, it IS funny) all serve to, over the course of an hour and a half, bring the viewer to nearly the same level of detachment as its characters. At the end, you (if "you" are male) probably most badly due to sympathetic pain than out of sympathy for the characters. In this way, I believe, he is making people confront that mindset to give them more reason to avoid it in real life.