Sorry, I am certainly not a kid or young girl anymore. I belong to the 20% of adults who don't remember how to play with their kids. Luckily my children have siblings. They rarely, if ever, need to play with me. Your statement is too definitive about the difference between adults and children. I'd say the majority of the adults have outgrown being children, psychologically and physically. I can't find any part of me that still feels like a child. I don't like climbing up and down the monkey bar or doing the things kids like to do. I don't let my emotions run amok like kids do. I don't cry when I accidentally get hurt. Children are egocentric and not caring about being overtly selfish. Sometimes they're bullies to other children. I am not. I carefully hide my selfish motives if there's any and I don't view myself as the center of the world or think I have the dominant power over the others that are weaker than me. I don't need to be pampered and comforted by others very often. I am a grownup and there's little eccentricity left in me. I know my place and most children don't.