Who needs a bed when you have a floor?

I don't get WHY my son loves sleeping on the floor! He will BEG to have "campouts" all the time! We tell him he needs to sleep in the bed, but we often find him on the floor. I thought maybe his bed was not comfortable--and its no Tempurpedic, but its not bad! Then I thought he was falling out of the bed and just grabbing the blankets. I was wrong on both counts! At least right now that is not the reasoning. He is either reading or drawing--CONSTANTLY!! Which I by no means discourage, except at bed! The other night, I had gone through his whoel room, cleaned out and put things in new places. At midnight,I went in to check on him and this is what I found! The poor kid is gonna end up with eye strain from trying to do all this in the dark! The remarkable thing is that he is so quiet, I never hear him doing any of it!