If national health care is such a bad idea, why does it workbetter than the US system?

The exceedingly poor diet of american's (myself included) and complete lack of excercise are likely the entire problem with that. The US is the best at treating disease I think, the fact that virtually all medical advances in the past 100 years have occurred here is proof enough of that. But people's life style here is not exactly healthy. This coming from someone who drinks soda instead of water (and it isn't diet) and lives off fast food. I don't really consider myself right wing though, I'm more of a moderate libertarian.