Why does couples yell so much when they fight, instead of just talking quietly about the problems?

People have different dynamics, and different forms of expressions. To you, it may be easy to calm down in the moment and talk things out, for others, that may be a little harder. It can be uncomfortable to hear a couple argue and yell. It may be disruptive and rude. If you feel like things could escalate to dangerous levels, it could be a good idea to bring it up once they're both calm. Some people don't realize how loud they can be when they're in the heat of the moment.

People get heated and lose control of their emotions. They don't really think about the effect it has, and they certainly don't care what they say.

I can understand how you feel, as I have been in this situation before. I’m not sure why couples choose to yell at one another, and it can feel very discouraging when you’re not able to get your point across to one another. Have you tried to ask them why they are yelling to see if you can find a new way to solve the problem? Sometimes in relationships, people think if they yell, it makes people listen, where in fact it can just make a situation worse and hurt each other’s feelings. Whether it is intentional or not. It can be extremely frustrating because you feel as if you will never be heard or understood

Because many people aren’t good at expressing themselves the right way. And therefore the other party will take it as an argument and thats when things start heating up and that’s when fights happened. Its always lack of communications that causes misunderstanding and arguments. When one is fire, one has to be the water. Keeping it balance. There has to be give and takes in able to keep the relationship healthy. And one more most important key is RESPECT. We should respect our partners like how we want to be respected. Push both egos aside, take deep breaths and talk calmly like normal adults would.