Antichrist by Lars von trier?

Is there a limit? I understand that humans have dark emotions, and art can help portray that. Although Antichrist made sense to me and it was well made, I have to ask if anyone else thought he took it too far. Isn't there enough sick things going on in this world, without us making it into art? Where does art stop being art and just become a disgusting example of how deranged the human mind can be? Opinions?