Yeah, you do that one too many times and eventually you're just not someone who sleeps at night anymore. It's coming up on seven in the morning right now where I live and I've probably got another four or five hours left before I crash for the night. I've got no reason to be up at this hour. I'm doing nothing that couldn't be done during daylight, though I suppose the sun has risen. Just doesn't even occur to me that nighttime would be a time for sleeping anymore.
I think the most inconvenient situation I find myself in at school is when there's some last minute problem in communications that requires me to be e-mailing the teacher around noon. I'm sitting there like it's time to get to sleep but I can't, because saying you didn't catch the e-mail on time because you were sleeping isn't considered a valid excuse at three in the afternoon. Three in the morning is a great time to be missing e-mails. At three in the morning I've generally been working for eight hours and have another eight ahead of me before I crash for the night. Such a diurnal-centric society though that it doesn't even matter that at three in the afternoon I've generally been sleeping for four or five hours and have another three or four before I'm rested and ready to start the day.
... but yeah. Long story short I totally know what it's like to just push a game late into the night and not even realize you should be tired. If I had a nickel for every time I've had to go do something after an all-nighter (or whatever the accurate term is at the time. 24 hours without sleep) I could probably cover the first and last month's rent on a comfortable apartment.
The SIMS in particular was a blast that way. I'm not even sure how many of my memories of the game actually happened and how many were mad fever dreams. That's a special brand of addictive right there
