This is our destiny. And as long as humanity does not accept the road God has drawn out for it, it will remain unhappy. That is why it is suffering so much today. God has the formula for all happiness, God is the source of all joy. Outside of God, there is no joy.
People get thoroughly disgusted.
If everything is going badly in the world, it is man's fault. God, Infinite Love, wanted to make His creatures happy. He wanted to give them a certain happiness, have them begin their heaven already on earth. That was God's intent, but humanity turned off this road which had been drawn out for it. This means that it has not conformed to the plan of God.