My parents are 78 and 80. Old age is slowly catching up with them. But my dad can still stay out in the yard for hours at the time and until Covid, my mom was still tutoring friends kids and grandkids in advanced math. She is still completely comfortable with driving from my hometown 5 hours to where I live - a place with some of the worse traffic in America. They were not “rich”. My mom is a retired school teacher and my dad is a retired factory worker. They retired at 55 and 57.

My dad still keeps active and he practices karate katas multiple times per week.

Maybe but it seems like your parents have their health and were taking care of themselves.

I'm in my thirties. I'm already suffering from obesity, have chronic pains in the wrists and shoulders and leg, and my hearing and vision are starting to deteriorate, and I've had multiple bouts with gout that leaves me barely able to walk for months at a time.

If my thirty's are already this bad, I can't imagine lies in store in my 40's, never mind 80's.