I am 56 years old.
At some point I expect to convert my 8 speed bike to electric.
But only when I am hurting.
Dude, you have a ways to go. I’m 63 and can still complete a 40 mile ride with an average speed between 19-20 mph. (I know there are faster riders) I sincerely wish I could restrain my competitive drive, but if you pass me on a ride, you better be able to hold that speed.