I don't think I've gone to sleep before twelve at night since high school. Two in the morning feels just right although it sucks because none of my friends like staying out late, then again, nothing is open late besides Taco Bell, and that gets old fast.
I've had this problem recently though of being sleepy all the time but I can't go to sleep. I just had a five minute nap because I was so tired but I couldn't stay asleep. Nothing more frustrating than that.