My grandma never had a car in a major pedestrianized city. She lived independently until the age of 92. She took buses and walked everywhere. My other grandmother mostly walked around town.

My parents have a car but mostly walk around town.

Would I be right in thinking that you come from a car centric area where people don't walk and this lose their ability to get around at a younger age? Perhaps you have difficulty conceiving of life in a pedestrian friendly city.

If so, I don't blame you, there are almost none in the us.