Banks runs may be part of the origin story of central Banks, but it's definitely not the only or main reason they exist. That's what deposit insurance is for, a

Banks runs may be part of the origin story of central Banks, but it's definitely not the only or main reason they exist. That's what deposit insurance is for, and in the case of the U.S., bank runs continiued for decades after the Federal Reserve was created. Central Banks exist to be a monopoly creator of money and credit for the purposes of manipulating the market. They exist to execute macroeconomic policy.