So we're not the greatest country because we don't have single-payer government-run health care.
Because we don't tax the rich at European rates. Yet, most European economies are doing considerably worse than we are, including France, England, Spain, Italy, and Greece. And if you're gonna cite Germany, then how about supporting German monetary policies, German labor polices, German budget policies, etc., etc.? No, because liberals dislike those policies, yet those policies are the main reasons that Germany is doing well.
Because we don't spend enough on education. That's a flawed argument. Most private schools spend about half what public schools spend per student, yet they do a much better job of educating kids. There are Third World countries where kids are getting better math and science scores than our kids, even though those countries spend a fraction of what we do per student. So money is not really the issue.