I think this is the issue in a nutshell. Partisanship. Even people who do not like the Demopublicans... are 'partisan'. I know it was probably not intended, but your post provides illustration of the issue by way of example. I'd wager you, like the average Democrat and Republican, would vote for whoever towed your party line. And this vote comes regardless of whether or not the party line is good for the US. If a given policy is good for the US, then great! But this is not a necessity to gain your support... it is incidental.
The important thing for Partisans is not continuous improvement, but continuous compliance. It's far more important to a Partisan that we do things 'their way', than it is for us to improve ourselves.
We need to move away from Partisanship toward an environment where each issue is judged on its merits. Without regard to preconceived grand ideas that underlie some Party's philosophy on the 'right way to do things'. This is the only way we will get the continuous improvement we are looking for. By abandoning the, sort of, 'sacred cow', ideas that have gripped the nation's political discourse on every front.