I fervently hope that when I am in the position your poor Aunt was in that I will have somebody as level-headed and wise as you making this decision for me.

Quality of life has to be taken into account when making these decisions. It is clear that all you'd have been doing by not signing those papers is to prolong a very unpleasant existence. What you did was an act of compassion and (dare we say it in these cynical times?) mercy.

I'm sorry for what you had to go through, but filled with admiration for what you did.