You are way off as you pontificate about how bad this is.  It's about a PERSONAL decision about one's OWN life.  In all cases where it is allowed, it requires the patient to be able to make a rational decision about their own life.  What goes into that decision, and how it is reached, is their own private process.  You are looking at it as a process for which the purpose is for the convenience of others.  It's not!  It's about a very personal decision to end what has become a life that is filled with pain and agony.