For me, programming was like being a little god in my own little world. For an introvert especially, it was exhilarating. You write a command, and it obeys. When you see something on screen is even more satisfying.

In fact, the all-night coding binges happen because in an intense period of learning, you are producing a ton of adrenaline, and that annihilates sleep. (Sorry, working, don't care to look for the study right now). But it checks out.