Now that's what I'm talking about! Great post Cantata!
When I had my 19th birthday, I was sitting with a friend in a pub, sipping beer and talking things, that day I decided that from now on, each year, I will have my 19th birthday, I decided I refuse to old... I refused to get old and grumpy, to acknowledge my age, just what Cantata is talking about!
I think people should do what ever they see important to them, no matter their physical age. When I was doing Aikido, the oldest guy in the dojo was around 65 year old, second oldest was in his fifties... And it was really hard to tell, only difference was that the oldest guy didn't have that much strength, it was obvious if his technique went wrong, but when it went just right, it was just like as being thrown by somebody in his/her twenties. Age may slow us down, but it should not be an impassable obstacle on the way of human experience, not in a mental way at least.
Another great example of this mentality of 'not aging' is one of my uncles, hes now in his early seventies, the guy does woodwork, keeps up his own house and summer cottage, he's constantly on the move, skiing at winters, jogging and fishing at summers and what not, very active guy, and in good shape, people mistake him for somebody at fiftysomething years of age because of this. Strange thing how much just attitude towards life, time and age does to a person. Then in the other end of spectrum, I see guys in my age (28) looking like bunch of relics.... Balding heads, bad posture, crumbling health etc.