In fact there are many reasons the government banned Bitcoin and Cryptocurrency, the first is certain because Bitcoin and Cryptocurrency are anonymous and decentralized, ownership cannot be tracked and transactions do not require third parties, because bitcoin transactions are directly from person to person. this will certainly be a big problem for the government, because the government cannot control this Bitcoin and Cryptocurrency. Next is the uncertain Bitcoin price, this also causes the government to ban Bitcoin, because this is certainly contrary to the nature of fiat money or conventional money. but I am sure, over time, many governments will accept bitcoin as a legal payment instrument.