What’s the Point?

Today I spent the day with three girls who are in a relationship. I was the only single person around today. Two of the three were literally screaming at their partners over the phone and slamming their phones on the table whenever their partner texted back something ignorant. I do not see the point of being in a relationship if you scream and fight everyday and make each other miserable.  I would never put myself in a place where my friends are, their boyfriends are telling to go fuck themselves and to fuck off every other text. That is not a healthy relationship. What is the point of making yourself miserable (as well as the innocent bystanders)? I’m not saying I have never been guilty of staying in a bad relationship too long, because I have, but it never, ever got to the point where we told each other to fuck off. I just don’t get it.