I used to have nightmares all the time when I was a little kid, and then they gradually went away, leaving me to simply have very strange dreams. I don't think I've had a true nightmare for several years.
Strangely enough, the past two nights, I've had unusually bad dreams- one in which half cat, half bird, half alligator type animals (150% terror!) hunted me down in a mountain village, and one in which I plummeted to my death in an incapacitated airplane. The airplane one actually woke me up out of fear. If there's one thing I hate, it's falling out of the sky at 4:17 am and then realizing that I have to go to the bathroom.