Since human history, everything has a value in this world, all currencies have disappeared, as in Roman times with gold coins or the exchange of goods.
If the dollar were to disappear, it would have a value associated with Bitcoin. For example, a satoshi could be worth for one kilogram of rice,world would exchange based on this value.
There is exactly one way out: bitcoin stops having a price in money and becomes money. The unit of account. The thing on which the price of bread is set.
