bitcoin cannot replace currency in the world because price is not stable.
currency should be more stable.
you may reply me. currency is not stable also but you should think
USD currency price is up and down 1-2% in 1 month.
bitcoin price is up and down 20% in 1 month.
what will people think if they just change USD to bitcoin then their money down 10% in 10 minutes?
bitcoin can become stock but cannot become currency
It cannot replace because aside from its instability, government doesn't want it, Government rules the world. They do not want something that they cannot benefit also bitcoin is anonymous, and government doesn't want the anonymity of bitcoin.