I don't think they want to be assholes. I think they will do what is best. Our system was designed to be centered around debate, no matter how ridiculous it makes America look some times, and how annoyed it makes me at times. (Imagine how this would have looked like when this level of debate was going on with wigs :) That is how the equilibrium is achieved. They will find a solution, and America will continue to pay its obligations. For this, I have very little doubt.
That is why I added today. I added to AXP, IBM, AAPL and am waiting to add to POT (but it looks like it got hit by a down grade, taking a more severe hit)