The problem with "Horror" movies

Here's my problem. I love "Horror" movies. Trouble is, half of all horror movies are really designed for people who like to get off watching other people hacked to bits. IMHO that's just violence pornography, and it isn't even interesting to me. But people who like slasher pics are a big share of the market for horror. Sometimes even thoughtful, interesting films end up pandering to the "I wanna see somebody's simulated guts" demographic. Personally I think there should be two categories: Slasher Films and Supernatural Films.
The supernatural can be a way to explore themes. A ghost can make a point of view very potent, by bringing the observer into a situation. By reenacting a crime or tragedy, they make the observer/the point of view character part of the action. By dropping oblique hints and glimpses of the past Ghost require the audience to think much more intently about what may have happened. They also give an emotional voice to the situation - they don't have the inhibitions a living victim or witness have - they are driven to express their emotions as their main mode of communication. Their frustration and anger over justice delayed can mirror the community's or the family's own frustration. At their best, 'ghost' stories can be a very cathartic process, as the audience travels from foreboding to shock to anger to release.
Monster movies have a different trajectory, but as a class of film, they're also worthwhile. Slasher films could be categorized as a subset of monster movie, those monsters where the monster is actually a real person, sane or insane, but otherwise completely competent and part of normal life (although frequently the slasher becomes more supernatural as the series progresses). Other slices of the monster genre include "oh my god what have we done" where the monster is a personification of nuclear power or genetic manipulation or sexuality or our own submerged animal nature brought up to the surface. Those great 50's alien monsters play with our paranoia and xenophobia, as do the best Zombie flicks.
But what I really want is an arc that has a beginning, middle and end. I don't have to have a happy ending, but I want an ending, not a question mark. The problem posed by the whatever has to be addressed and some kind of conclusion reached. Even if the creature will lurk forever in the shadows, it needs to be understood, its nature explored, its message delivered. Worst of all is the "other" with no message at all, just a muddy mess of violence wrapped up in a "there is no answer/there is no escape" ending. I hate those movies.