The way your system is going right now, it is unsustainable and in a few years, more and more people will be without coverage.
Juan, the same poll that says that a majority of Americans are satisfied with their own health care, also says that majority of Americans are worried about the future of the health care, that they may not have coverage in future (due to losing their job, or their employer discontinuing health insurance etc..).
I don't know why the Republicans like the system so much when it clearly doesn't work when so many dollars are sucked out of the system by the insurance companies.
There are two reasons for that. One is that Republican Party is in the pockets of the insurance companies, they are big donors to the Republican Party.
The other his that Republicans sense an opportunity here. Democrats failed to pass health care bill in 1993 and partly as a result, lost both the Senate and the House in 1994. They apparently are hoping that if they keep Democrats from passing the health care bill this time around (that partly explains the destructive, abusive behavior at the Town hall meetings), they may gain the control of the House and the Senate in 2010 elections.