I see folks like that at the cancer doc. Old, sick. alone. It's sad.
If my wife dies before me, I'd commit suicide. But she's a lot younger. So I'm expecting my plans to go as predicted...my wife takes care of me while I die and then she cashes out what's left and moves in with my daughter, who should be well established by then. That's kind of on auto-pilot. Also, I have a about five more years and then no more cats or dogs because I cannot guarantee I will outlive them and that would be disastrous if I didn't.