I agree with many of the views expressed.
If I were in such a condition I'd most likely be looking and hoping for a 'way-out'
I read a serious appraisal of options on this a couple of years ago.
It's really not a easy as many of us think. Especially when trying to be very sure that there are zero instances of abuse where folks are 'done away with' for convenience.
I'm sure we have legal experts who could propose some 'watertight' wording etc if only the courts were more open minded.