So my question is can bitcoin be a main currency of world economy?
I believe that in the future, cryptos have the potential to rule the world economy.
Decentralisation is a main feature of the coin due to which they are not bound to any rules and regulations of the government and makes the coins a good currency. It makes a direct contact between the economy and the people without any intermediaries.
However, volatility stops the coin from being mainstream as stability is highly important for a strong economy. But with the market capital that the coin has, I believe that the coin can overcome this hurdle in the upcoming years and be a mainstream currency.