When I play hide and seek these days with a girl it's usually hide and fuck. Nothing like heating up the moment when it's you and some drunk girl hiding from some guy in a dark closet.

But yeah, I kind of know what you mean, in my neighborhood there are a LOT of kids, I always notice how much running they do and how much fun they're having lol. I think as you get older just life in general wears you out more and you relate to doing other things for fun.