I think Bitcoin in the future will not become my global unit. Seeing that there are still many people and countries that still trust the monetary system to fiat, it seems that Bitcoin will find it difficult to displace the fiat place. Some people are comfortable with bitcoin and some are too comfortable with fiat, this makes Bitcoin still stuck here and can't go beyond fiat. Moreover, there are still many people who are less sensitive to today's technology, therefore fiat is easily accepted by many people because it has a physical form and its value is clear.