Mediator

I'm so sick and tired of being my parents mediator.


I want to start of saying, I know I have absolutely no idea what it's like to be married, but I still don't understand the reason for constant pointless arguments. The closest thing I have to knowing what that is like is my brother, but me and him didn't even get to pick each other and we argue less then my parents. It's so frustrating to me because I reap all of the consequences and the problem isn't even my fault. Like this morning, I get into the car and my mom starts lecturing me about how I need to choose who I marry extremely carefully. I ask her where the randomness comes from and she proceeds to tell me all these things about my dad that bother her. Okay, I'm all for venting, but hearing my mom trash talk my dad is not on my favorite conversations list. Then we move onto tonight. My parents are just chilling watching a basketball game, and they turn one comment into a full on war that ends in my mother storming upstairs. I'm left sitting downstairs with my dad talking about how stupid they're both being. I then get to listen to my dad trash talk my mom. Another conversation that's not on favorite conversations list. I try to get down to the heart of the matter and see why they always argue about stupid things and yes, there actually is a legit reason, but both of my parents are too concerned with their freaking ego to do anything about it.
So here I am. Sitting in my room knowing all the reasons why my parents are frustrated with each other, but I can't tell either of them because they just don't want to hear it. I'm 15 years old, is it really necessary for me to be my parents babysitters?
My main thing, is I just don't understand why they can't just brush it off. I have to do that every day with people at my school that annoy me, I just don't get it. Getting annoyed with the little things that people do it just a waste of energy.
And this whole thing really upsets me because this is what my brother used to be really good at. He could always fix things after a fight and I'm just no good at it.
I feel like my parents are just being really selfish right now.
I just want my brother to come home. ):