What's the reason that arguments in relationships or marriages turn into insults and yelling matches?

I can understand there will be some differences in opinions but why would it then lead to insults and yelling matches? That has to be totally disrespectful by then. Whats the reason for arguments to get that bad?

Normally, people would settle their differences without the need to hurl insults or shout. What exactly are you gaining, winnng by doing that?

What's the reason that arguments in relationships or marriages turn into insults and yelling matches?
Post Opinion