Not all countries will choose to use Bitcoin as a legal currency to replace traditional financial currencies.
The high volatility of Bitcoin price cannot be used as a daily transaction currency, and the rise and fall of Bitcoin price will affect the original income. The transaction fees for small transactions and the long waiting time for transaction confirmation are inconvenient.
Bitcoin runs on a network system, and transactions must be carried out on the Internet. However, many countries lack Internet services in certain areas, and they do not understand the use of Bitcoin. There are also some countries that explicitly prohibit bitcoin transactions and do not allow the use of bitcoin to pay any fees.