Everything is fine. Look over there!

The health care segment makes up about 6% of the US economy. During the boom years, housing also made up about 6.3% of the economy. Source. 

I'm sure this isn't going to be as painful as that. I mean, at least you could escape that it you wanted by defaulting. Sure it took down the whole economy. We just don't know exactly in what way this too will take down the whole economy. If that really matters.