People will only consider using Bitcoin as a mainstream currency when it is completely accepted in the financial market. Currently, the coin is banned from so many countries which is not great for being a currency.
Also, the coin is currently too volatile to be a mainstream currency and hence is not a trustworthy exchange means. The coin has to be more stable for the people to do so.
Right now, the coin is a great investment asset to earn good profit returns but is not fit to be a currency.
I completely agree with your answer guy. At present, almost all parts of the world dont accept currency, even some governmens impose a ban on it, thus many of us get trouble using it directly. Yep, cryptocurrency is extremely volatile, thus its pretty hard to identify accurate price of commodities or services or that sorts of things. Especially, cryptocurrency is notoriously anonymous, its quite difficult for any country to control especially illegal transaction. Anyway almost all countries will have comflex if accepting cryptocurrency officially.