There are facilities that will arrange for you to terminate if you are with a sickness, a cancer or whatever that makes life itself a living hell. You are simply taking yourself out of that. Oregon has these and Belgium also. It is not exactly supported because many people have a problem with it.

One of my doctors ate his .45 handgun when he decided that a certain stage of Bone Cancer was going to kill him anyway and in great pain that cannot be stopped by medicines. So he pinned his DNR on the coat and finished it. The reason he ate his .45 is because there is a Fatal T which is your brain stem that controls your body's life support. Cut that and you drop like a sack of potatoes dead before you hit the ground.

It always leaves survivors with questions. And sometimes it is done because the alternative is not living.