Well, I have not read this huge thread. I find the question insulting. Don’t challenge me.
I, at 65 years old, take care of all house repairs. I mow my grass. I shovel the snow. I walk our dogs (daily). I ride my bike every other day.
And I do lift weights for my back. Every day. But it’s frankly none of your business why I don’t lift weights. I do it every damn day, just taking care of business.
A question for the OP, have you ever worked? I mean really worked.