update: still haven't gone to see it, but i noticed it's gone from three showing a day to one showing in the afternoon. i think this means it'll hit the dollar theater within a couple weeks.
as far as "the point" of horror movies? i think it's like the attraction people have to rollercoasters: modern life doesn't engage the primal experience of acute fear followed by adrenaline rush followed by exhilaration as often as humans are hardwired to encounter such an experience. to fill that gap, humans seek experiences that simulate that reaction. some people really do take true risks, but the rest of of us choose safe stand-ins like horror movies and rollercoasters. this is why a horror movie only succeeds, in my book, if it makes me jump, gasp, shudder, cover my eyes, etc.
psychological thrillers that creep you out for days afterwards are a different type of movie than a horror movie. they are a type that i don't understand "the point of" in the same way i don't understand the point of creepy nursery rhymes that make the most innocent things in the world look threatening.