No one is suggesting that
The problem with Ms. Schiavo is nothing like Alzheimers or a typical disability. The only thing her brain is capable of is operating the body's involuntary functions. She cannot think. She cannot feel. She is unaware of her surroundings.
Unlike Alzheimers though, which eventually leads to death, her body can and will continue to operate without any mind or thought for decades. Her husband's act to allow her body to pass on is based upon his belief that that is what she would have wanted.
This is a terrible human tragedy of difficult consequences and you, like the ass that you are, trivialize it by referring to anyone who may sympathize with her husband's pain and challenges as "Dr. Mengele."