I loved ghost stories, creaky staircases, stormy nights. If it guaranteed nightmares I read it by flashlight, after midnight.
Cartooning was a good fit for me. And yet now, years later, I almost never think about it.
The passage of time is a continuing thing. At 18, you're going to live forever, and you are definitely not at 52, so that is a recurring topic. I still think it's the main stuff.