In reality most Americans are perfectly happy with the system we have now. They like their insurance company, their coverage, their doctors etc. The grass roots uprising we are seeing at Town Hall meetings would not be happening if people wanted government change in a private run system that runs perfectly well.
Maybe I'm nitpicking.
*The costs are the MAIN thing people are uncomfortable with, and everyone has their bogeyman, whether it be supposedly greedy insurance companies, supposedly greedy doctors, or lawyers, plaintiffs, the government, and illegal immigrants.
The grass roots uprisings are happening because people do not want to see their freedom diminished, their health care rationed, or, ultimately, their standard of living diminished by an ever larger government sucking away their livelyhood (which any clear thinking person knows will happen with gov't run health care: There are solid reasons consumer goods in Europe cost 2-3x what they do here, and their health care systems are part of that equation.)
I'd guess that if you poll protesters at a town hall meeeting, the vast majority would say Congress DOES badly need to do something to reform tort laws, or increase the supply of doctors. Plus, they might add that govt's involvement in health care payment has already seriously distorted the system, and put an unmanageable load on Federal and State budgets. So, I think they would disagree with your use of the word "perfectly happy" or "runs perfectly well".