Give me a break.
First, there is a big fat difference between refusing medical care and having a doctor kill you.
Second, society has made provision for these people to control their medical care through the living will, DNR and other provisions. The fact that there are families who ignore these provisions does not mean that we need a new, radical and drastic provision for them to ignore, it means we need to enforce current statutes.
Either you understand these concepts and choose to ignore these crucial differences, or you really don't understand them. If it's the latter, you have as much business pontificating on this issue as Gomer Pyle has designing nuclear plants.
There we go!
In the end it's ALWAYS about the money. And it's generally not the spouse that is worried about it, it's the children and grandchildren wanting as much as possible.
As for the "do gooders" they are called DOCTORS and society has long recognized their importance.