A whole lot of the elderly people I know (70s, 80's, and even one who lived into her 90's) actually do quite a bit to take care of, and help, a lot of younger families. The lady I knew who was out, volunteering until she was 93 or so eventually decided to sell her own house and move to a place where assisted living would be available if/when she needed it. Before she needed it she just lived in her apartment without the assistance, but without having to worry about the 8-room house and yard she'd had before.
My mother was in her 70's when she died, and she was caring for all kinds of people in one way or another.
I always like to point out these things, because so many people seem not to realize that a whole lot of elderly people are perfectly capable of caring for themselves.
Having pointed that out.... My mother was cared for at home before she died. My father died at 62, so he never got to be elderly.