When my Father was around 88, he had trouble getting around. He could get up in the morning and put his coffee on, go to the bathroom, shower etc. but could no longer drive etc. He was not at all obese btw.
Many years before, I had cut out a long hiking trail on his property. Mother and Daddy made a daily hike just about every day. When he could no longer make the hike about all he did was watch TV. I guess that was about all he could do.
He had Blue Cross and Blue Shield plus medicare and between them they paid for one of those scooters. He would take a trip around the trail on the scooter daily. He really enjoyed it. I had to build a ramp and also a bridge across his creek.
There was always the danger that he would get hurt but it was worth it. I do remember one day when I came over and he was not in. It turned out his battery had given out about a hundred yards from the house. I was able to push it far enough to get an extension cord (12 gauge wire) to it.
Finally got him home and bought a new battery.
Good story.