Sorry to hear about your loss. It's a bit close to home for me... kind of-- eventually. I'm 56, and my riding buddy is twenty years my senior. He continues to ride with our local cycling club and comes with me to cycling events I ride. Usually, I'll do the century, and he'll do the metric century or 80-mile option. He did his last century in February 2018 when I organized a century ride for a few of us from Key Largo to Key West. He looked at me at about the 85-mile mark and said, "We're not friends right now." I laughed and told him he could hate me after the next 15 or so miles. He's still in great shape even though I pull him more and more each year. But the lovable and grinning SOB still consistently drops me on the climbs!
I have thought about the day he won't be riding or might not be with us.