“Death with dignity” offers not only an escape from pain and humiliation, but a rational and apparently noble way to leave this life. All it requires is that you declare yourself God. Make yourself the lord of life and death, and you can do what you want. All you have to do, as a last, definitive act, is to do what you’ve been doing all your life, every time you sin: declare yourself, on the matter at hand, the final authority, the last judge, the one vote that counts.
But you are not God, and, the Christian believes, the decision of when to leave this life is not one he has delegated to you. To put it bluntly, he expects you to suffer if you are given suffering and to put up with indignities if you are given indignities. The Lord gives, and the Lord takes away; blessed be the name of the Lord. And that, as far as dying goes, is that.