Let me get something straight out of the way: there are people who give poor ratings to a film because they are offended by its subject matter, that is, they use their voting power as an attempt of censorship. I'd like to assure you that I am not one of those people. In fact, I prefer films that tackle difficult subjects because those are usually the ones that teach you something new, make you re-evaluate old prejudices or see certain things in a new light. In short, I firmly believe it's by being willing to get out of one's comfort zone that one evolves.
This isn't a bad film because it offends my sensibilities; it offends my sensibilities by being a bad film. The only things going for it are the acting and filmography.
In terms of telling a story, it's really bad, especially the almost non-existent narrative coherence. The film jumps from scene to scene without much logical connection between them, characters do weird things to each other one scene and are completely-fine-as-if-nothing-ever-happened the next scene, and it is, more often than not, impossible to discern what actually happened and what is perhaps a product of the main character's imagination. My girlfriend, who watched it with me, described the film as "crazy" at first, and as the credits rolled, "totally pointless", referring to how incredibly unsatisfying the ending was. It's a film that sets a lot of things up but ultimately doesn't deliver on ANY of them. It was 1h30 of our lives wasted.
Another way to describe it: you could randomly re-arrange all the scenes in this film and it would still have the same coherence as it currently has, which is to say, none. It feels like the scenes were randomly arranged to begin with.
How the other 6 reviewers thought this film wasn't bad is beyond my capacity to comprehend.
For a much, much superior film dealing with a similar subject, see "Una".