Men have more right to be upset about this movie than women
Funny how the film's portrayal of women seems to create most outrage, but if anyone has the right to be upset, it's in fact men. Every single male character in the movie other than Brian is a horrible and/or violent individual:
Johnny: Don't get me started on him
Sebastian: Rapist, sadist, ultra materialistic maniac who plans to commit suicide when he turns 40 because he doesn't want to be old
Archie: Put his father in the hospital in a violent outburst, threatened to "cut Johnny's head open" and seems to be violent towards his girlfriend as well
Limo chauffeur: Starts yelling and shouting profanities 10 seconds after he realizes that he allowed the wrong person to sit in the limo - partially his own fault
Then there's a group of young men who beat the crap out of a total stranger in a dark alley for fun.
Overall, the women are portrayed better in this film. At least they're caring. They're certainly not perfect, but what do you expect in a movie of this sort? And for the record, I think that the film is a masterpiece. It makes you think, like few other films.