I have in fact proven my theory. 95% of the male population sleep closest to the door, without discussing or even questioning why they do it. This is related to a masculine response from the brain to which the male sleeps closest to the door as a defensive measure. The side in which the man sleeps appears not be any kind of issue, the only thing that relates to this is the side which is closest to the door. I think you've tried to judge my theory before even understanding it as none of this was explained in my question. Maybe you all treat this site as a "Get help" site, but in this instance, I was using it as help for college work.