In families, mom and dad are probably fucking on a regular basis. They also fight over trivialities and cheat on each other. The kids are CHILDREN who make mistakes, and have fewer legal rights than the adults. The parent(s) fund the whole thing by working for someone else, the children are basically leeches that do not contribute to the profits of the family. They all live together and sleep next to each other and spend enough time with each other to hate each other sometimes. They fight over limited resources and the ultimate goal of a successful family is to eventually disband socially.
They spend all day separated from each other, and come together at night to spend money and time on things together.
Does this sound like any sort of company you'd want to work at?
I don't see the point of your rant; your sarcasm seems to be cutting in two directions at once. Obviously real families do have strife and deal with it. When the 16 year old wrecks the family car, everyone still has to sit down at the same table. When the twins get into a fistfight they're still expected to go to school together. None of that means that they shouldn't be trying to act like a family when things don't suck.
So yeah, when the boss has to cuss someone out it sucks for everyone. That doesn't mean you can't sit down to lunch together.