Watching my boyfriend get into D&D and DMing has brought on some powerful waves of nostalgia. He's been getting all excited about his latest idea for a dungeon, a Napoleonic sailing ship that sunk on its way back from Egypt with mysterious cargo aboard, and it's been fun seeing him research it and plan it out and get to work. It reminds me of my own early game mastering, before I started worrying about whether or not I was "doing it wrong," and just played the game.
I'll be the first to admit, those early games weren't perfect, and I made a lot of mistakes on issues that these days I can handle without a thought. And he's been running into trouble on the skill side, too; he made his rooms way to complicated at one point, which caused some frustration on both our parts when it came into play. But there's a real joy there, when you first start learning and it's all about the sensation of discovery, that I miss.
It's something that the "old school movement" has brought back for me, at least a little bit. The whole "make something up and run with it" approach has reminded me of how I did things back in the day, and it's let me go back to it without also going back to not having any clue what I was doing and screwing up my games in serious ways as a result.