dreams

I woke up at 6am this morning because my alarm went off. Usually, I turn it off and go back to sleep for another hour (and a second alarm). When I woke up, I was in the middle of a very vivid dream. The kind you remember. It wasn't a night mare - just one that I didn't care to be in at the moment. So, when I woke up I didn't go back to sleep. I prayed for the people who were in my dream and then sat there wondering, 'why do we dream?' and all kinds of related thoughts. I'd love to hear your ideas:

Why do you think we dream?

Why are people from our past in our dreams?