It's almost like we need some kind of cryptography currency
Cash is way less traceable than most cryptocurrencies.
What are you going to do if governments decide against issuing any more cash? Bills will eventually break, or the currency itself will lose too much value due to inflation that the bills won't enough.
With crypto you don't rely on your government issuing cash.
Cash is just a paper IOU for some other thing. With 100 dollar bill, that thing is 100 USD. You could also issue paper for gold backed IOU, or gold itself, or bitcoin.
https://en.wikipedia.org/wiki/Wildcat_banking
Counterfeiting paper is a problem, so you need force against this, and this is why the government is generally involved. But what kind of paper counterfeiting is enforced against, is just a legality. Currently the wost thing to counterfeit is 100 dollar bills. Law could be changed to make it equally bad to counterfeit gold bills, or bitcoin bills.
Saying bitcoin is less private than cash is a category error.
My point is that there is nothing stopping bitcoin from being used in a paper cash like way, any more than any other value carrying token.
Bitcoin without government support? Possible, but inconvenient and dangerous. Bitcoin with government support? More nice things.
Currently we are in the "with government support" world, more or less. I hope this continues.
Even then, almost all PoW are tuned in a way to pump the value and enrich the early people, not fairly distribute tokens or make the crypto functional as a currency.
probably would have been better as reply to you.
Again:
It's almost like we need some kind of cryptography currency