what if the government closes or does not allow the exchange of Bitcoin or cryptocurrencies with the official currency in each country? 
Actually right now, many countries still ban Bitcoin. which is why many crypto enthusiasts always cash out through P2P services. there are several trusted and reputable services that provide P2P so that it will be easier to be used by people from that kind of country that ban Bitcoin. I really hope that many more countries will legalize Bitcoin at least for digital assets, even not as a payment method.