Years ago I thought that if you were elderly and poor, homeless even, then committing a crime in order to go to prison (three squares, a bed, TV and mates to talk to) would be an ideal habitat.
Turns out the Japanese are doing just this. See the comment below (link included).
What else should the elderly be doing? Sharing their homes with oppressed college kids who need to save $ for room & board?
Dangerous work that doesn’t require high physical strength or acuity?
The military. Don’t send youngsters in to a war zone – send old folks?