Judge, you will know in your heart when you truly believe it is time to relieve him of his burden, when you can see he no longer wishes to go on.
I find this a very sensitive subject actually...how to put it?
We are legally allowed the 'right' to choose whether our pets live or die, and if the later -when. We have that right because we believe we are acting in the best interests of the dog's happiness and well-being.
I find it utterly amazing then why this same attitude of kindness and mercy is not equivalent for humans.