"If you were to strap a newborn baby in chair in a room with the blinds drawn..."
No doubt you are correct, but I am not a newborn baby. I'm 42 years old, married for 18 years, raised three children into their teens (so far) and that is my point of reference, not that of an infant. My choice, were I in Terry's condition, would be to pull the tube... and I pray my wife wouldn't take ten years to make the decision.
You had better put that in writing then. Because when you are crying out in pain for food, she will want to know that you don't mean it!!!!!!!!!!!
But you are not Terri, and she never said any such thing.