I used to think 70 was old, but as I'm about to turn 77 in a few months, I'll move "old" up to eighty five.

Someone suggested that the word "old" should be banned from this forum. So should the word "elderly".

I don't care if the OP gets an E-bike, but I would encourage him not to worry about turning sixty. During my sixties, I hiked in the Alps and Pyrennies, biked, skiied and snowshoed etc. I don't know if you can turn back the aging process, but you can accept it and make some adjustments, and enjoy that time.