After hard storm, the sky will be so blue and clear. Actually, the sky is normally being like this color since the world begins, but we cannot see its beautifulness until the the dreadful disaster happened.
It is the same as our life. We will not recognize the real value of the possessed thing until we lost it. How do human beings usually be so late on recognizing their values of life? And, how do we human beings survive such suffering and thrive in spite of it?