The justification in this case is that the people are opposed to Obamacare so Republicans have a duty to fight it. However, the latest survey of registered voters found that only 33 percent believe that Obamacare should be delayed, starved or repealed. 29% felt that Congress should make changes to improve it, 26% said Congress should let the law take effect so people can see how it goes, and 12 percent believe that the law should be expanded. I'm curious about that survey. Not saying I don't believe it - you can have many surveys saying different things. But even media outlets that support AHCA have acknowledged that 56-60% of registered voters oppose the individual mandate.
About the same % (57%) state that AHCA will increase premiums for most working Americans.
On the % that say, "let the law go through and we'll see", I can say with certainty that number is dropping quickly, as more and more learn the actual truth about their plans, premiums, and doctors who will participate (and won't participate). The problem is that too many people were trustworthy of Obama's initial claims.
There's only one thing in your numbers that I've seen (and believe me, I've looked at many numbers) - close to 10% believe in a single payer system.