Not having much free time to get on a forum that you enjoy reading/participating on, so the time you get on it is when you've been tossing and turning for four hours and decide to give up for a bit. Then after catching up on a thread or two, your mind isn't processing well enough to make a legitimate response and you start falling asleep. The worst part is doing it for a week straight.
Another thing, but it's more of a personal peeve... I'm not well-rested unless I sleep for about 10 hours. If I fall asleep and remain uninterrupted, I almost always wont open my eyes until approximately 13 hours later. BUT I have trouble falling asleep every night of my life, so I sleep an average of 4 hours a night on weekdays. This means I am tired for almost everyday of my life except during weekends. Even then, I am so exhausted from being tired I don't even want to do anything. My dumb ass should probably get on sleeping medication, but I have a dependency phobia.
Great thread, dacheat.