"Words have power. They can teach, help, and heal. They can also hurt, humiliate, and destroy."
All true, but people have to learn how to fight with each other in a partner relationship. If people don't occaisionally have a lively debate, one person in the partnership is getting their way every single time. Thinking that some conflict is not part of any normal close relationship between equals is delusional. Everyone has their own interests, and sometimes they are different between two people even though they sleep together. One woman told me that her fighting style was "Remind and conquer.", which means that she was keeping score, just like everyone else.