6,600 mixed-up graves. Really. Now try to imagine how a centralized health care bureaucracy will coordinate services for billions of people who are still alive. Not a pretty mental picture.
Those who would like to more fully explore the economics of bureaucracy should read Ludwig von Mises' Bureaucracy. I read it during my time as economist at the U.S. Bureau of Labor Statistics and can tell you that while doing so I was seeing the theory practiced every day.