Got a gent in his '80s at our place still teaching. Ex-military pilot including time in Starfighters. Built three from scratch, no kits, EABs, including a scale P-40 with an exact replication of the complicated retract gear. Did a first flight for the builder of a gorgeous Hatz biplane this spring, and then did the dual instruction in it. Teaches people to do stuff in RVs most didn't realize they were capable of.
Stay active as long as you can Tom. No reason to quit as long as you got your health and you still want to fly.