The thing I find really scary about ghosts and demons is that you don't really know what they are or where they are. They're not very well understood. You don't know what they want from you. So it's the kind of thing you don't even know how to defend yourself against. Anything that's unknown and mysterious is very scary.
Our lives are pretty calm. Merging on the freeway in the closest you get to risking your life. So what's missing now is that primal emotion of being scared to death, and I think that's why people crave thrills like roller coasters or scary movies. They give you the chance to feel this very primal emotion in a very controlled environment.
On 'Paranormal Activity,' it worked to my advantage not to have much of a crew, but on a bigger movie, where you have to work with a larger group of people who basically become your second family for a few months, it can be a great experience. Even though all of my projects are small scale compared to most Hollywood productions.
I feel like when you do things with such a small budget, it actually makes you be more creative... and allows you to concentrate more on the story and the characters. I think that there is something about dirty, gritty and raw filmmaking that makes it feel a little more natural and makes it easier to connect with the action.