Why money is defaced?

Money is defaced to prevent its use as legal currency, often due to legal or regulatory reasons. This can include damaged or worn-out bills that are no longer fit for circulation, or intentional defacement to mark currency as unfit for use, such as in the case of counterfeit detection. Additionally, defacement may occur for artistic expression or protest, though such actions can lead to legal consequences. Ultimately, the act of defacing money serves to protect the integrity of a nation’s currency system.