Sure there is wear and tear in all sports. Like you said, catchers get beat up over the course of a career, especially of a few decades ago.
But it’s not a question of if you truly had the option to go pro in both sports, it’s wishing you were good enough in the other to go with that one instead. I’ve only ever seen retired football players say they wish they could have hit the curve ball and been baseball players, not retired baseball players saying they wish they could have perfected the techniques of the offensive line or whatever.
FReegards
I haven’t seen any retired athletes wish they could have played something else. Not for body damage reasons, seen a couple comment on great plays in their sport and others they wish was them.