I also ride for many of the reasons given. As well, being a Clydesdale it is easier on the knees. The main reason, other than loving the feeling of riding, is that I my career has been in geriatrics and I have seen so many times that "use it or lose it" is a reality. I want to keep my ability to keep going as long as possible.

While the oldest bike I have right now is a 2009 or so CAAD9 (some consider it vintage), I also ride Single Speed or Fixed Gear most of the time.