Is forcing people to live ethical?

Growing Old with Autism: The Silent Struggle - TIME: "Noah, my younger brother, does not talk. Nor can he dress himself, prepare a meal for himself or wipe himself. He is a 42-year-old man, balding, gaunt, angry and, literally, crazy. And having spent 15 years at the Fairview Developmental Center in Costa Mesa, Calif., a state facility, Noah has picked up the con's trick of lashing out before anyone could take a shot at him.

Noah's autism has been marked by 'three identified high priority maladaptive behaviors that interfere with his adaptive programming. These include banging his head against solid surfaces, pinching himself and grabbing others,'"

Related: From The Responsibility Project "An Alzheimer patient has wandered off again. What do you do?

I am beginning to wonder if we are being cruel to these people by forcing them to stay alive. The Responsibility Project would not allow my comment: "Maybe he is wandering off to find a place to die." Maybe the Autism patient is banging his head against the wall in an ineffective suicide attempt.

Just because the body is capable of supporting life are we being ethical in forcing it to do so in the absence of informed consent of the mind controlling that body? There are of course difficult issues of determining intent from a damaged mind, but is it not ethically presumptuous to say the head banging or the wandering off is not a suicide attempt, or at the very least an attempt to end the lack of control over one's life?

I have given explicit instruction to my family that if the genetic dementia expresses itself in spite of the medical preventative measures, they are to find a care facility near the back country in the Sierra, Hetch Hetchy, by preference with explicit instructions not to limit my wandering off. If some day I don't return they may assume that I was careless and provided lunch for a bear. It wouldn't offend me in the least to be recycled in that manner.

My family on my mother's side has a tradition of "Turning their face to the wall" when they decide their will to live is no longer present. Not a bad choice, and I am sure I could do it when necessary, but I would much rather wander in the wilderness on my last day and "Turn my face to the cliff." Sure I will feed a wild animal instead of a crematory, but the wild animal won't care or know the difference between me and any other dead or dying large animal.