Do you think it's possible Bitcoin will become a "global unit of account" in the future? If not, why? What would a world without Fiat really look like? Your input will be greatly appreciated. Thank you. 
It doesn't even need to be the main unit, I'll still be happy, if it's only as a recognized payment alternative, for example. Don't be considered as an enemy to an institution or a party that doesn't like Bitcoin. Globally this would be hard to imagine.I can only say this is difficult, because so far the adoption is still less than 25% how the world will not allow Bitcoin to be too powerful. There will always be the opposition to thwart it. The absence of a control center is clearly a strong consideration and will be a big obstacle. If we talk about the future, maybe every country will use their own digital currency with a version that is much more crypto-friendly.