Why did the US ban the non essential use of chloroflurocarbons?

The U.S. banned the non-essential use of chlorofluorocarbons (CFCs) due to their significant role in ozone layer depletion, which increases harmful ultraviolet radiation reaching the Earth's surface. This decision was influenced by scientific evidence linking CFCs to the thinning of the ozone layer, leading to health and environmental concerns. The ban was part of a broader international effort, notably the Montreal Protocol, aimed at phasing out substances that harm the ozone layer.