All this time, David had always tried to escape from the cruel reality that tried to slap him awake from his dream. From the start, David should have known that his wife's heart would never belong to him. He had only held onto the false hope that his wife would love him too one day. They would live happily ever after. So even if David couldn't save his childhood, he would be happy in his old age.
But that happiness also turned out to be unattainable when his wife decided to leave him alone in his cold world.
David started to go crazy. He even began to feel that torturing Mia could bring back his wife. But no matter how long David tried to wait, his wife still would not reappear and scold him for hurting their only daughter.
