You probably are the only person other than myself who liked the movie, but I'm a criminologist and have a high tolerance for hideous behavior. That would include that of the directors and producers of this sludge, who might have made a film that commented responsibly not only upon the trivial drug-addled cretin who was Michael Alig, but the context in which he blossomed and prospered, to wit, NYC nightlife. Even therein he was not what you would call a popular guy. Just because a murder is dolled up in glitter and interesting music, hons, it's still death and destruction, and it's NOT fiction.
More informative and interesting is the documentary that came out before Michael Alig was even incarcerated, which might also be called "Party Monster." (Someone please correct me on this.) In that, you may thrill to the ultimate *shock value* of seeing M.A. himself being interviewed about Angel, and he's rolling his eyes and giggling and confessing on camera... no-one took it seriously then. No - someone's confessing to murder, and his society just think he's trying to show off.
I don't think it's being NUMB that is the issue, Bobby. I think it is a total skew on what is considered right and wrong. The issue is that there is no rudder ... possibly even no conscience at all.