There would be a huge chaos but it would be recoverable.
The only thing that will end the Jewish system of usury/riba is religion. The one true God dictates clearly in Hinduism (before they became polytheists), Judaism (before Talmud was contrived by rabbis), Christianity (before reinterpretation of the meaning of usury), and Islam that charging interest or taking like for like (dates for dates or cows for cows in unequal value) is cursed.
Gold and silver is an absolutely usable currency today. In Utah you see the Mormons who hold tightly to (albeit warped) Christianity, spreading the idea of a paper bill with a set amount of gold inside of it.
Explore Islam. It is worth your time. The propaganda is a shroud to keep you from a pure and beautiful way of life. Don't judge the religion based on the actions of fringe people who murder and kill women and children (clearly forbidden).
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