Old/retired is social security/401k/pension.

Not everybody has payed enough into social security to get any use out of it, and not everybody has a 401k/pension. And that especially goes for pensions.

Chronically ill is social security.

Unless I'm missing something, people who are chronically ill are typically on medicaid, not social security. But my question was really about the "heal to a point where they can get off social programs part".

There are many people who will never, for the rest of their life, or for a very long part of their life have no ability to heal or become able bodied. Are you suggesting they get booted off these programs anyways?