The U.S. continues to mint pennies despite most being unused, creating a "Perpetual Penny Paradox" where demand for new pennies never stops because they disappear into storage rather than circulation. This cycle causes significant logistical challenges and costs, but despite warnings from officials for decades, there has been little action to eliminate the 1-cent coin.
Twenty-five years ago, Philip Diehl, then the director of the United States Mint, stated that “two-thirds of the pennies produced in the last 30 years” — 1969 to 1999 — had “dropped out of circulation.” So even at a time when three-quarters of Americans’ payments were still settled with cash, pennies were not being spent.
https://www.nytimes.com/2024/09/01/magazine/worthless-pennies-united-states-economy.html