Here's a tip how to remember dreams. It is true we dream every night. What you got to do is wake up during REM sleep. When we sleep we go through a cycle and after about 4 hours it keeps repeating. Time an alarm to wake you up about 2-3 hours before your normal waking time and chances are you'll remember your dream. And have a paper and pen by your side so you can immediately write it down. I have actually been able to remember dreams almost every night for like the last month. I have been waking up several times a night when I used to just sleep all the way through. Also prepping yourself before going to bed, like telling yourself (making yourself consciously aware) that you are wanting to dream and wanting to remember the dream. This will also increase the odds of you remembering a dream. It is proven that remembering dreams can become a skill with practice. Also according to Freud, our dreams have a hidden meaning. They can reveal an unconscious message about yourself if you analyze it. There is something called day residue. This is when your dream had content that is related to something in your day. Like Sumo's dream of Will Smith and Aliens, perhaps he was watching a movie that day or the previous day that had Will Smith in it or Aliens.