The dollar is the worlds reserve currency. American printing presses have more life in them than other countries.
Look at the countries that have opposed that since the beginning of the millennium: Libya and Iraq saw, ahem, “kinetic interventions”, and Iran and Venezuela are still being crushed by sanctions for daring to price their oil in Euros and/or RMB.
Take 2008, for instance. The Fed injected $4 trillion. Why? Because $4 Trillion evaporated in the crash. The result was that we didn't have a deflationary meltdown, but it didn't result in inflation.
Most loans are against tangible, reposseable assets, or against future income streams. A bank that just handed out loans without commensurate interest rates to avoid the risk of default would quickly go out of business.