Proper preparation time

It takes longer than six months to get ready to die. Yet we disallow preparations, insist on tests and treatments and repairs.  HHS/ SAMHSA is watching pain medication prescribing (does that more impact we on Medicare, Medicaid, … ? Another obstacle for seniors ?) Now we don't want POLST's signed in advance. There's something frightening and controlling. It seems to me one should be preparing these documents at 18, reviewing periodically, …