Well, given that the world seems to be led by the insane to a large degree, we had better watch out! The USD is already being bypassed as a form of payment by some countries and this trend is likely to continue. The BRICS alliance, plus recent partners, seem to be interested in an alternate form of digital currency. Whatever happens, it needs to be remembered that all previous dominant fiat currencies eventually failed and lost their status.
https://blockchain.news/news/brics-alliance-considers-creating-new-currency