Originally Posted by
RonH
I'm 69 and get depressed that I can't do some of the things on the bike that I could do when I was a kid (late 50s).

Then (a few minutes later) I get over it after I realize that I'm in better shape than most of my non-cycling friends who are my age or even 10-15 years younger.
↑↑↑↑ This. ↑↑↑↑ I'm only 61, but if I compare what I can do on the bike now with what I could do 20+ years ago, it can be depressing. But if I compare myself to other 60↑↓ year old people around me, then I feel a lot better.
A lot better. Plus, I'm fitter than most people I know that are up to 20 years younger than I am. So
OP it depends a bit on how you look at it. I say keep riding; ride for the pure enjoyment, the fresh air. Eat right. Then watch how your life and fitness and mobility compares with your peers.