ELI5: Explain Like I'm 5

why do people fight

People fight because they are mad about something and are trying to solve a problem. When someone is mad, they might lash out or try to hurt someone else in order to feel better. Fighting is a way for people to try and get what they want, or make things right when they are not happy. Sometimes people fight because they don't know how to express their feelings in a different way and they just don't know how else to make things better.