Me too! I've ridden roller coasters, especially when pressed by my foster son, but I would never do so voluntarily. I don't like to be scared, and I've never really understood why some people apparently do like to be scared.
Same with horror movies. If I don't know what I'm in for, and then the slashing starts, I'm out. I've even walked out of cinemas a couple times. I don't get why people enjoy fear and pain. All I can seem to want to do in a circumstances is get away as fast as I can.