Why is psychology important?

Psychology is an important subject because it talks of the people's emotion and how do they affect the behavior of society. Without society we would never know how the human mind works psychology also talks about human emotions and why do peole feel the way they feel and why do they react as they do. This is important to me because I learn by watching how people do stuff and why they do it. In if all of the people would know more about psychology the world will be different.