"In either case, the decision to give someone a feeding tube without consent is just as much playing God as the decision not to give someone a tube."
No, giving someone s feeding tube is doing what you can. To NOT give them a tube, pretty much determines that YOU are calling the shots. Convince me that starving a person to death isn't just that - playing God.
As I mentioned, ultimately it is NOT you who takes the person move on. What I mean is sticking in a feeding tube doesn't mean the person will linger. A heart attack or another complication can easily claim them.
None of us controls whether someone's health falls to the point that he (or she) cannot eat. The question is only how far we'll go in employing unnatural technology to sustain one part of what that person needs to live. We aren't starving anyone by refusing to employ that technology. The disabled person is starving because his health has failed and God hasn't acted to save him.
It's obvious that I won't convince you of anything, but it's also obvious to me that you are the one with the God complex. That's why most of the American public doesn't want to put you in charge of their medical decisions.