Since you overtly reference a Christian world-view, and since we, as Christians, are enjoined by the Lord to "In everything, therefore, treat people the same way you want them to treat you, for this is the Law and the Prophets," I take it that you would prefer for yourself, were you in the same condition as Terri at her end, that you be maintained by slurry pumping and diapering for another indefinite period rather than be allowed to die? Is that really your view?
This is not a 'trick' question, but admittedly a tough one. It is easy to pretend 'compassion' for those like Terri and then say in the very same breath that she should have been kept alive in the miserable condition in which she was. But Jesus, as usual, is much tougher. He asks "What would you want done to you?"
This is really the nub of the issue for me. For me, there is not the slightest question, not the slightest hesitation, I would definitely want to die. So, once having said that, Jesus doesn't leave me any room for posturing about 'compassion' for Terri and then saying she should be subjected to that which I would not want for myself.
No.
Actually, the pertinent passage was "...whatsoever you do for the least of My brethren, that you do unto Me."
That is, (given that we are not talking about a clearly terminal condition and/or one which clearly COUNTER-indicates nutrition and hydration) no one can "decide" for another that the other wishes suicide. That would be "doing" evil to the "least."