Journalist Christine Odine raises the uncomfortable question about health rationing in the UK, "Why should fat people take precedence over the elderly in the NHS?"
When the government is in charge of health care, it will inevitably lead to arguments about who receives medical care and whose care is denied. Which means, those with the most political clout (or with politically popular diseases) will get their care at the head of the rationing line -- at the expense of those without such clout. If you have an unpopular disease, you're out of luck.
Let's hope we don't get to that point here in the US.