I hate gore movies.
Paranormal Activities scared me witless. I have the One Year Rule, I watch the trailer, wait a year, watch the movie, wait another year, watch the trailer for the next one, repeat.
This is so my brain has time to go from "OMFG THE DOOR MOVED I'M GONNA DIE" to "Hey, ghost movies aren't scary. I'm not scared. I'm brave"
It's a good system.