In general, without some form of inflation, you end up with a deflationary spiral because people stop spending and the economy seizes up. No one will spend money if just holding it makes it more valuable. It then becomes a race to horde as much as you can for as long as you can. It's also, quite uhhh... perplexing for me, to not increase the money supply when populations are increasing; because, they're increasing the value of the money by increasing demand for it.
Central banks are the result and answer to reckless unregulated financial markets crashing, being manipulated, and destroying lives... Oh shit, kind of sounds like bitcoin, doesn't it? Everyone does this "central bank boogeyman" and thinks it should go away but they all absolutely ignore why they exist in the first place.
There's a ton of quality stuff to be debated in regards to economics-- this is not one of them.