The problem with fiat money is that "inflation" is not visible. ECB, Fed, BoE, BoJ are all hyper-inflating and it will end very badly. Look at the balance sheets and you'll see the hockey stick growth. Has little to do with prices, but more with debt stockpiling.

Bitcoin is volatile, but its extremely useful as money (if you live in Argentina or Zimbabwe, etc.). Descendants types will be far superior to government debt as money. Deflation basically means price-appreciation versus other assets. Inflation as its currently happening is fraudulent accounting on a unprecedented scale. The blockchain by contrast offers honest computer based accounting.