In 2019, I was fascinated by Bitcoin after I was introduced to it. I have been following the attitude of governments towards bitcoin and hope it will be promoted. However there has been too much negative news in the past two years. I reacquaint myself with bitcoin and fiat money.
Money is a tool for exchanging goods and services in human social life, and whichever tool makes it into the system becomes the de facto currency. Governments regulate the economy by issuing money, which means they can control it. Bitcoin, on the other hand, cannot be controlled, which is why we like it, but also why governments don't like it.
After I figured it out, I no longer expect Bitcoin to be recognized by the state, and it doesn't need to be. It is part of a special asset, not a currency.
So I don't think Bitcoin is going to become a fiat currency.
World currency? I think that the function of Bitcoin is not limited to currency. This idea is too narrow. Because of the emergence of Bitcoin, many derivatives have been derived. These derivatives are slowly changing the new financial order of the world and become It doesn't matter if it doesn't become a world currency.