I was a little hesitant to visit this forum, but I do qualify by age.
I'm happy to report that I've found it inspirational. I mean it seems you guys just can't be kept down: heart arrthymias, anticoagulation with coumadin, hip and knee replacements, Wow.
I just wrote to a retired friend who avoids biking as exercise because it induces some apparently minor neck pain. I related some of your experiences as recorded here.
I've had one other inspirational exposure within the past year: The Blind Boys of Alabama. I was just amazing to see them on stage bounce around and perform with marked gusto. They are well into their 8th and 9th decades of life. Those guys would probably be bike riding if they could only see.