Such a morbid topic, but I suppose end of life issues wont be pleasant when we all get there. It's terrible that all these types of things need to be considered, but when it comes to anothers pain, only they can really make the ultimate choices. If this is what works for them, then this law is to their benefit. The best way to go is the way of the tzadikkim,....in one's sleep (we should all be so lucky)