Sounds like you still are, and will be, a cyclist for a good bit to come. Hitting 75 around Christmas and counting myself very lucky. I've been blessed with excellent health (knocking on wood) in spite of a lifestyle when I was younger that could have done me in. I just hope if (or when) a major setback hits that I'll be able to handle it as well as some who have gone through them. Hang in there, sounds like you're determined to persevere. Might not be tomorrow, but no doubt you'll be riding again sooner than later!