Speculate that Bitcoin could become a global currency in the future, it is difficult to predict with certainty what will happen in the next 10-15 years.

Bitcoin and other cryptocurrencies are still relatively new and rapidly evolving technologies, and there are many challenges that need to be addressed before they can become widely accepted as a currency. Some of these challenges include volatility, scalability, usability, and regulatory issues.

Additionally, it is important to note that governments and central banks play a significant role in the global economy and have the power to regulate and control currency. It is uncertain how governments and central banks will respond to the growth of cryptocurrencies and whether they will adopt them as a global currency.