What do you miss the most from your childhood?

Honestly, I don't miss a thing. I'm happier at this age than I have been at any other I can remember in every way I can think of. Everything is so much less mysterious than it was (which is in every way an improvement). I don't miss any friends; if I cut them out I cut them out for a reason and I wouldn't take it back, and if I didn't cut them out I still have them. I don't miss lack of responsibility because without responsibility I faced a complete motivational deficit. I don't miss the high energy, because I feel like I still have it. Maybe this is all because I'm not quite in full adulthood, though, so I still have the best of both.

EDIT: Changed my mind. I miss heads down, thumbs up. That was the best game I've ever played. That's it though. Just heads down, thumbs up. I think that's a pretty good result, only missing one thing.