No, they aren't. There always are patients, who could be kept alive at high costs but without much, if any, prospect of recovering.
True... though I'm lost as to how you think that is somehow ethical.
Once the government becomes the single payer — which is what Obama and you dream about — the decision will be the government's.
Really? Then explain to me how it is that everyone over the age of 65 isn't immediately put to death the first time they catch a cold by the government since people on medicare (everyone over 65 in the US) ARE on a single payer system. Or how it doesn't work like that in any country that has a single payer system (which is most of them). After all you apparently believe that "death panels" exist - astonish me. Oh that's right, back here on Earth things don't really work like that. [/sarcasm] Medical decisions are largely left to the doctors and health care professionals and while reimbursement rates might change, the option to treat will not. Doctors often have to fight with insurance companies to get reimbursed for treatment but they ALWAYS have the option to treat and they usually can get reimbursed if the treatment really is medically necessary. My wife is a doctor and I see her practice do it every day.
Apparently you've forgotten that people vote (especially older people) which is why politicians are absolutely loathe to make changes to medicare, even when it is a good idea to do so. Do you really think that anyone who actually, in real life, promoted the government deciding when people should die would remain in office for long? Seriously, you have an absurdly cynical view of how the world works.