I've asked myself what dreams are about many times in the past..dreams are very mysterious and very odd... I used to have a dream when I was younger that I used to jump down the stairs but I always woke up before I reached the bottom..
Or if im scared/worried, I tend to dream but randomly, like nothing to do with what im worried about!

Maybe dreams are meaningless, or maybe they are unconscious thoughts that come out in our dreams if you believe in Freud's ideas..