So is suffocating a person, yet most people say they do not have a problem with removing a respirator.
If the patient is conscious, he will have a terrifying sensation of drowning. It is unconfortable, even painful.
They can save lives. The problem is in how tortuously they can prolong life.
There is a huge difference in being fed through a tube and being respirated. That's why the forces of Kill Terri Now keep deliberately confusing them...