I used to do that also and now I am ready for bed at 10 p.m.
I envy you for being able to do that. I have never been able to stay up all night. I attempted a few of times, but I threw up after each time. My body doesn't like it I guess.
Oh, me too. Those days are behind me, and now I appreciate a nice nap in the afternoon. Probably catching up from the sleep I missed in my 20s. :)