If you are getting older and have always done physical labor, but can no longer do what you used to due to physical issues created by working too hard for too long, what are you supposed to do? Just die?

Really at a loss here. I just left a job interview where they were clearly looking for a younger person. It's manual labor, so I get it, but I have done a lot worse for the rest of my job history and just wanted something a little less. They just went through the interview quickly to be nice and that was it.