My 75 year old hangar mate buddy is just finishing hanging a fresh engine on his RV-6. Our airport mob has members that are 72 and 80 and still flying (very well I might add). I turn 65 this year and I just finished hanging a fresh engine on my Lancair IV which I expect to fly until it runs out of time.
Definitely the wrong reason to quit flying.
Fearless Fred, king of the crocodile swamps