What were the most important reason why prohibition ended in 1933?

moonshining was the most important reason why prohibition ended because lots of Americans died every year and the other people thought that it was not ok if lots of people were dying so they thought to ban alcohol to get people to stop dying. Another reason why i think this is because many people died because they drunk , alcohol and the alcohol was poisonous because they smuggled alcohol from a Another Country but they added poison in.