This is the fundamental philosophical difference between what I (and others) believe and the stance of the single-payer supporters. Thanks GruntDoc for linking to the money quote:
As with any good or service that is provided by some specific group of men, if you try to make its possession by all a right, you thereby enslave the providers of the service, wreck the service, and end up depriving the very consumers you are supposed to be helping. To call “medical care” a right will merely enslave the doctors and thus destroy the quality of medical care in this country, as socialized medicine has done around the world . . .
(via On The Fence Films)