I personally believe All That Is (The Mighty One) does exist, however, not in way, some believe or understand. Quantum Mechanic's and Physics mixed with the emergence of corporal newly born ego... is quite complicated......for a new born to understand......
The first actual humans, were a very crude corporal version of mankind.......
If we truly evolved from animals. A shift took place from just being of instinctual nature. Or, if the first crude humans are born from micro organisms as animals were born from earths soil....a shift still took place with the emergence of ego........which humankind needs to understand things like....not putting your hand in the fire...etc... with the emergence of an ego = deeper understanding.