No, because things can be sufficiently stable that people are no longer in contest over the fundamentals like food and water, but not sufficiently to have a wid

No, because things can be sufficiently stable that people are no longer in contest over the fundamentals like food and water, but not sufficiently to have a widely-standardized currency. Gold is useful because everyone, everywhere recognizes its value independent of any other entity. This happens simply as a function of gold's rarity and manipulability; if you're looking for a natural resource to stand in as a currency, gold meets the requirements better than other materials. This is so, and will remain so despite any human ongoings.