I despise gore and gratuitous violence. Gore isn't necessary, and violence should only be used to tell the story and help the audience feel/understand the characters' plight. Films like Hostel are just gore and violence dished up ad nauseum for entertainment's sake.
The Shining, The Amityville Horror (the original), and When A Stranger Calls (again, the original) are the scariest movies I've ever seen. They didn't require gore, and didn't use much violence. Good film-makers can set a frightening mood without that crap. Those films all scared the crap out of me when I saw them, and was around 12...not really a kid anymore. I saw Stranger Calls on TV in the middle of the day, and was still freaked out and constantly looking over my shoulder.
I won't even bother watching remakes of these. The Amityville remake looks like they've incorporated a bunch of special-effects eye candy in the form of ghosts, which the original didn't even need and which would probably only serve to distract my mind from being scared. Same with the remake of Stranger Calls: it looks like it would end up boring me by asking me to suspend my disbelief. The original didn't include stupid shit like the babysitter walking around the house investigating. She'd be too scared to do that, like in the original movie: she's pretty much frozen and that makes you freeze up too.
Those films are true horror films: they scare the shit out of you. Films like Hostel are gore films. If you're sick in the head, they might be entertaining, but they're not really horror films (or at least, they're not good ones).