Taxes are important if a governments need to work so if someone is cheating while paying the taxes then he will be punished with legal actions.In crypto currencies most of the people are not paying taxes and even many governments don't have proper taxes for its usage that is why the governments are trying to ban the usage because it if continues for a while then it will cause economical disaster in that country.
Well as most of people say and also based on the government policies people has to pay taxes because it is the taxes that will become fund for government projects such road repairs road widening and etc it also serves as fund for calamities so paying taxes is not that bad because we're also the one that benefits to it. And in fact it is for the economy of our country.
Yes these are like the process in which we pay for the completion of the projects and when these projects are completed we get the benefit of its usage we also get some profit by working there. A number of people from the state are getting employment in that and the state also get stability and development because of the completion of that projects.