It is difficult to predict what will be the future. Someone afraid of his future unknown. It has always been. No one knows what awaits humanity in a few centuries. But it largely depends on the person what would be his future, he creates his story. Now people should care about the future of their descendants, so that in the years mankind never had to suffer from hunger, lack of fresh water and oxygen from the disease. It depends on us, what state will get to our descendants the planet Earth.