Why do you dream

No one actually knows why people dream. Doctors have theories though. One theory that doctors have is: When you are at school, home, or somewhere, there are so many things that are going on that you don't think about during the day, night, etc. When you sleep, in other words dream, you think about all of the things that have happened. Also, during the day or night, if you are worried or upset, or feeling something about someone, something, etc., it all comes out. You think/ dream about it when asleep.
Even without understanding the meaning of your dreams you are helped by their images, which show you aspects of your daily reality that you tend to despise and which reflect your internal, psychical world.You dreams are basically warnings, because they have a protective character. The best thing you can do is to care about learning their hidden meaning, besides being helped only because they alarm you, instead of letting you continue making the same mistakes without being bothered at all.

This is why you have to learn the dream language. However, the simple dreams about the person you love are very clear and you can understand them many times, even without knowing how to translate the symbolic dream language. You only need to understand the dream logic and learn the meaning of a few dream symbols. Your dreams have a mission: to show you the truth that you ignore and the reality that you deny seeing, because you are not intelligent enough and you refuse to care about the things you dislike.

I'LL SEE YOU IN MY DREAMS BY GIANT (1990)