Like with used cars: It's not the age, it's the mileage.
OK, some of it is the age. I'm now (just) old enough to qualify for the seniors menu at Denny's. I hardly ever eat at Denny's but somehow that hit me as a milestone. I have arthritic big toe joints, but otherwise going pretty good. I've lost ~55 pounds since last November and I'm exercising more and feeling very good. But I still can't remember names worth a darn. My beard is gray, but most of my hair is not. And I still have my hair. So does my Dad who is 82. I hope to go another 30 or so, but who knows? I will try to stay fit so as to enjoy whatever I've got left.
It occurs to me that my avatar pic is nearly 10 years old. There's considerably less of me, but considerably more gray than in that pic. Maybe it's time for a new one?
John