A geology axiom is "present is key to the past", there is another saying that history repeats itself that should make us think that this Earth & its inhabitants will not be the same. We are bound to change, the changes are inevitable, we may or may not like them but our future generations will have to accept them. My experience have taught me that most of the people do not like to think about the future, they believe the human life will go on like this forever, or there will be day of judgement; the material world will come to an end ; we will be living in a different type of world.