Of course they are part of society as common tools, but money can be corrupt or just a misleading way to measure value in society, especially with ecology and a very sophisticated society.
With the end of the cold war and the soviet union, there will be an endless supply of people arguing against planned economy, while it's clearly undeniable that all modern world governments are somewhat already centralized in a way or another, would it be by law, lobbies, government or monopolies.
It's really weird how bitcoin showed that normal banks are actually the best way to handle money. Government-regulated currencies are best because voters can actually have a saying in how money gets handled. You cannot say such thing about BTC. BTC is at the mercy of malware and BTC-to-dollar exchanges.
BTC really is the most shiny software gadget ever invented. Most people don't know how it work.