Fiat is manipulated by governments/banks to control & have power. Whales heavily manipulate crypto. By switching to crypto, isn't it just handing the control & power from governments/banks to a small group of wealthy whales?
Cryptocurrencies are resistant to manipulation, therefore they are not subject to inflation, i.e. no government will eat your property through this tax (let's call it a spade name), which introduces to destroy private capital.
It is worth noting that fiat currencies, due to the fact that they have no coverage in gold or have nothing to do with mysterious algorithms, can be reprinted to power, and also have a chance to go bankrupt. Paradoxically, they turn out to be more virtual than cryptocurrencies! Example? During the crisis in Cyprus there were those who lost their savings kept in banks!