Make Yourself Invisible

That morning I had sat at the table eating cereal while my parents fought.  Someone stole some stuff from us way back in November, and we were still getting stuff squared away with insurance.  (Insurance did not pay us out as much money as we believed they would.)  My Mother was trying to get some photos and scans of the new things so that we could have them on record.  The scanner was in the other room.  She turned it on and then tried to work on the next picture with her camera while the thing was scanning.  My Father came in and turned it off and it angered her he couldn't ask. 
"I want you to leave," she yelled at him.  And he did. 
I do what every body does when someone is having a fight in front of you: make yourself invisible.  I hurriedly tried to finish my cereal and then put stuff away, but I got a front row seat anyway. 
I've been thinking a lot about this fight, not because it's rare (it's rather typical) but because a few of my friends have been discussing their own families fighting with me this week.  Everyone mentions the frustration and stress of it, and Jennifer particularly addressed how she felt like she had never seen a relationship up close that worked. 
I am now of the impression that no one knows how to make a relationship work, that humans understand virtually everything better than relationships. 
And people wonder why I'm so cynical about these matters.