Why God became ruined

"A story is a character who wants something and overcomes conflict to get it."  - Donald Miller, A Million Miles in a Thousand Years - What I Learned While Editing My Life

God is also a character in a Story. However, even though he is its author, though he could write a less painful part for himself, he subjects himself to the story.     He's in fact, the hero, the protagonist.  If he doesn't come through, then you don't get to live.  So what does God have to overcome in order to get what he's after? 

First of all, what exactly is he after? 
He's after the total and supernatural re-making of each person -- which means he has to rescue their hearts.  Rescue the heart and you rescue the person.  Only restored persons are able to live well in a restored habitat.  God is after the thorough remaking of all living things, so that they may receive his affection and direct, unfiltered Life. 

“This world is a great sculptor’s shop.  We are the statues and there is a rumor going round the shop that some of us are some day going to come to life.”  - C.S. Lewis

This has already been done.  The Great Lion, Aslan, by the stirring of his own breath, has released those bound in stone into his own immortality.  Sodom and Gomorrah has been reversed.  This is the gift of salvation.

Second, what does God overcome to get it?
The unintended consequences of his Beloved's freedom. The unintended consequences of his Beloved's freedom.

He has to enter into conflict with his own creation's ruinous affliction and overcome it.  He ties the millstone around his own neck. He goes down with the ship.  Because he is truly free, he discards his own freedom by becoming ruined himself [God "became sin for us"], turning the human heart back towards his affection. He gave the Christian her new and noble heart, so that she could return to God with all her heart.

"A story is a character who wants something and overcomes conflict to get it."