The Civilized Divorce - Why Not?

I am rather taken with Maryland Divorce Legal Crier's The Civilised Divorce:

She says she first noticed the trend when a friend showed her a professionally taken black and white Christmas card of a recently divorced couple from Stockholm. “There they were smiling away on the card with their immaculately dressed children, even though inside they posted separate addresses below their names.”

This couple, writes Kirwan-Taylor, have a personal Civilised Separation Agreement in which they agreed to protect the children, respect one another, split everything down the middle fairly and never quarrel openly.

Think this will catch on in America?

I think we can hope but that leads me to ask a different question: if your divorce was not civilized, why was it not?