God's desire to destroy the earth is always one that seems to confuse people. John Wesley talked about it though as a place of hope. The world can never be in such a low place as it was at the time of Noah. No matter how frustrated we get with the current state of our world, we can be encouraged that our world can be saved.
God felt the world was hopeless only once, and he knew that it would never be desperate again. In Roman times, when the world was filled with orgies and drunken parties, God sent Christ to guide humanity back to a sense of holiness.
Our world today can be redeemed as well. People speak so negatively of the church and our society, yet the Holy Spirit is moving like a wildfire in Africa this very moment. People are throwing themselves at the feet of Jesus, hungry for God.
We need the Holy Spirit to set ablaze in our society and redeem us by his power. Come, Lord Jesus.