I believe that is a very personal decision.
It is and that is the point of the story. The old lady made her decision and the others are not happy with it.
Bingo, marktwain!
This example is a very good example to demonstrate the need for clear, concise PRE-NEED healthcare decisions and instructions by means of EOL statement, living will, whatever vehicle your state allows.
Even that, though, is not enough. You must communicate the details to ALL concerned. Granting a healthcare POA to a family member or trusted friend can create friction, but it if everyone is aware, there is little argument later.
Of course, Zero and 0bamunists will have their death panels enabled shortly, so some EOL decisions may be obviated by the socialists.