Great responses. It's really great. I mean, somehow I know you can of course keep young while taking up responsiblities. I know a wonderful Swedish teacher who's probably in her 50s or 60s, and she's still a playful young child in her heart- and that's exactly how I want to be. Live according to what your feeling says, and at the same time being responsible and in a sense, sensible. She teaches well, she grows plants around the campus, she takes care of little lost animals and set them free, she makes up little funny stories, she plays in the puddles in the rain, she does little tricks to fool her own students for a good laugh...
I was just really unsure if she is the only example I have ever seen in my life- then I saw these replies and I know, oh, I can also be like that 10 years later coz now I know more people who're like that.