http://money.cnn.com/2011/05/16/news/economy/debt_ceiling_deadline/index.htm?hpt=T1 Trump did it several times and people still do buisness with him and lend him money. people do it all the time and get credit card offerings in the mail 3 months later. Why not just default and start with a clean slate?
A default doesn't necessarily clean the slate. Defaults are frequent throughout history. The empire either crumbles or the payments are simply delayed -- with more interest. And should a complete default occur you better get your shotgun loaded.
Man, are you just plain stupid? When you go to a bank and they offer 2 rates to borrow money which do you choose?
Trump's a bully. His mama read him the parable about the squeaky wheel getting the grease. To answer your question, it's the SAME reason why you accept a dollar bill. It's backed by the full faith and credit of the US Government (and basically nothing more). The lesser of two evils is to perpetually de-base and ultimately pay back debt (actually interest rather than principal in CHEAPER dollars).
You think its possible to borrow at a fixed rate and then see inflation exceed that rate? Are there careless bankers out there who might overlook this possibility?
US economy depends on $1.9 trillion imports and cannot default https://www.cia.gov/library/publications/the-world-factbook/geos/countrytemplate_us.html