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
I do agree that, for the time being, you definitely can't live solely on bitcoin. At some point, when it's more stable, certainly. That's why, while I work on a (camgirl) site that takes bitcoin (bitcoingirls.live), it's only an option, not the sole one. It is certainly valuable but, for now, having both bitcoin and actual money is way better.
That is really the one disadvantage of bitcoin having the big amount then still the price is not stable. Stability of one's currency is important because this makes the buyer or investor to really trust that particular currency. Although bitcoin has disadvantage it has very good and great advantage for many users and i can say that it is very helpful to many users prefering this kind of sideline. Bitcoin is profitable.