Thought provoking though it is, the answer is simple. Man created God! It is irrational to let our lives be governed by faith that is based on something other than evidence. It may be true that we do good because we have faith that is based on something other than evidence but it is still irrational to do so. It is such a shame that despite the plethora of evidence at our disposal, people attribute their existence to supernatural. Childhood indoctrination has engraved this thought in our minds and it is hard to get away from the clutches of religious faith.
In my early life, I looked upon God for everything. It was not until my teens that I had the courage to question religion. It took probably an equal amount of time further into the future until I proclaimed myself as a proud atheist. What is there to be so proud about being an atheist? It is a feeling of intellectual fulfillment. We look at life as it is and realize that we have just one. This is a precious life and we should not waste it. Further we realize that we do not transcend into another form after we die.
Sages like Paramahansa Yogananda speaks about an invisible world. Something that we can’t see or perceive with our senses. I think he speaks about the atomic world. We don’t see them and yet we know atoms exist. The ancient sages used to preach that the soul is indestructible. Atomic theory clearly explains why soul is indestructible. It is because the atoms that make up my body formed before my body was formed. It will be replenished throughout my life due to biological processes. And those atoms will stay the same after I die. Atom is indeed the soul!
At the dawn of civilization, humans who lacked the scientific knowledge of today looked upon natural phenomenon and interpreted them as manifestations of divine intervention. Not only the creation of the universe, but also God was supposed to interfere with every other aspect of our lives. Rather we were taught to believe so. How much evidence in this modern world do we have about miracles? I do not know but I am sure that the number of miracles in the entire world would statistically add to nothing because the number of people indulging in desperate prayer will be thousands or even millions of times larger.
True enlightenment is the situation when we understand and perceive the world as it is. No light is going to come and hit our head bestowing us with universal wisdom because there is no such thing. Any claim of lights hitting the head can be easily disposed because the there is a whole range of illusions that the human mind is so capable of producing. As mentioned before, this is a precious life, this is a beautiful life, this is a wonderful life. The love that we feel towards others should come from within. It should be derived from a modern sense of compassion that is empirical rather than from any religious indoctrination. We have to realize that our existence depends on the presence of other people in this world and that should be our philanthropic source!