Sleeping freaks me out.
Ironic, because it should be really peaceful.
But the idea of laying down and then losing control of my brain and body really scares me lately. You know, you just lay there, waiting for sleep to come, and you can never remember the moment where you slip from consciousness into unconsciousness because you get there so gradually. It's kind of like playing "the game." If you think about "the game," you lose. If you think about sleeping, it escapes you. It's really a bizarre experience. And no one know why we need to sleep!
Thanks to xkcd who sums it up pretty much perfectly.