Why does the US dollar still have any value?

Our money is no longer backed by anything. The US dollar is in demand (worth something) because of it being the world reserve currency and most countries have to use it to buy oil (‪#‎PetroDollar‬). Banks can loan out 10x what they have (DEFINITION of ‘Fractional Reserve Banking’ A banking system in which only a fraction of bank deposits are backed by actual cash-on-hand and are available for withdrawal. This is done to expand the economy by freeing up capital that can be loaned out to other parties). The FED (Federal Reserve) is a private bank (http://www.businessinsider.com/who-actually-owns-the-federal-reserve-2013-10). The IMF (International Monetary Fund) sets the price of the gold you and I will never see (https://en.wikipedia.org/wiki/Gold_fixing). Banks type money into existence. We all know that if everyone went to the banks to get all their money they would not be allowed. The bank literally doesn’t have it. Why do we accept it? Chase (http://www.npr.org/sections/thetwo-way/2013/11/19/246143595/j-p-morgan-chase-will-pay-13-billion-in-record-settlement) and Bank of America (http://www.cnbc.com/2015/04/30/7-years-on-from-crisis-150-billion-in-bank-fines-and-penalties.html) have been fined billions because they broke the law. They cheated veterans (http://militaryadvantage.military.com/2011/10/banks-cheat-veterans-out-of-millions/) and HSBC actually paid $1.9 BILLION because they enabled drug cartel money laundering(http://www.reuters.com/article/us-hsbc-probe-idUSBRE8BA05M20121211). Thoughts?