Not sure if it's too distant to be relevant here, but the fellow I bought my TT350 from was in his late 70s, living in the California desert. He sold it because he could no longer kickstart a bike and was planning on getting something with electric start instead.
I hope I end up having to "give up" kickstarting at 78...
Wherever you go, there you are.
1986 Yamaha XT600 (daily driver) 14,876 miles
1986 Yamaha TT350 (dirt supermoto) 5021 miles
1978 Yamaha XT500 15371 miles