This article discusses the different theories about why we have dreams. There are many different beliefs from well known psychologists, and the truth is no one really knows what causes us to actually dream. The purpose of this article is to present different theories so the person reading it can decide for themselves which one they believe to be true. The theory that I support is Freud's, which is the one that stands out the most. Freud believes that our dreams are something that we have previously wished to come true. Freud also believes taht these wishes can go all the way back to our early childhood to fulfill something in our past. One idea I found to be very inte