If we knew absolutely everything, would we need religion? The purpose of religion is in supplementing that part of the picture of the world that we neither know nor understand. It gives us confidence and inner fulfillment. If a person is connected with the Upper Force, researches, comprehends, and feels it, he does not need the psychosomatic support of religion.
Nature and the Creator are one. Therefore, it makes no difference if we study nature or the Creator. So if we know the Creator (nature) in His entirety, there will be no room left for religions.