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) 15,969 miles
2004 Kawasaki EX500 (commuter) 7,297 miles
1992 Suzuki GSF400 Bandit (project) 35,179 miles
Wolves do it in the snow.