It's good that you're horrified by most horror flicks, you're supposed to be horrified by a horror flick. For a really disquieting time here's one I saw just last night, Let Me In about a 12 year old vampire and her search for a new Renfield when her old one starts falling apart.

"I'm 12, but I've been 12 for a really long time."

Not an urban fantasy vampire, or a romantic fantasy vampire, this lass is dangerous. But mostly the horror comes from the implications of the situation. It's a layered film with tons of nuance.

Just thought I'd help you become even more disturbed at what the world can pull on us. :)