I notice that in vintage movies and especially children's books and movies, the goal was to be a grown up. To be Jim Dear and Darling in Lady and the Tramp. To wear high heels or a tie, spray perfume, and go out at night to shows.
Not it seems that the goal is to be about 22 (maybe younger). While it isn't always true (for example, my favorite "reality" show, Project Runway, usually has a "token" adult on the show), usually the exploits of the young and barely legal are celebrated in the media while simply being a grown up is not.
I am in no rush for my kids to grow up. They will be there soon enough. But to be elegant is to be a grown up.