I hardly to the two are comparable.
It was a very base example but you follow my meaning...yes?
I love horror movies, probably because I had an a'hole of a stepdad who used to think it would be funny to show them to me when I was 4-6 years old, they used to terrify me.
However, as that was my early years, it embedded something in me that loves horror to this day. Most horror I find particularly boring and doesn't actually horrify. So when a movie comes along like this, I eagerly await it to see what reaction it provokes.
I like films that provoke an emotional reaction both good and bad, most films these days are by the numbers affairs where you can already see what's going to happen. This doesn't just apply to horror, all cinema is guilty of this.
FTR...i've watched A Serbian Film and it messed with my head pretty bad, it is a twisted movie with some extremely shocking moments. It is also however an extremely well crafted movie and has a lot more to it than just the shock moments. I won't go into it further, A Serbian Film has been discussed to death and I don't want to change anyones feelings about it.
All I will say in closing is that I really wish people would actually watch a movie before passing judgement, regardless of what they've heard, you can't objectively judge a film until you've seen it.