Evolution postulates man and all life began as a single cell.
Evolution seems to hesitate to think about the next step.
It is as if the evolution of man was programmed from the beginning to reach a final end result. Man definitely had a beginning. He will definitely have an end. He would be meticulous in maintaining his health and the health of his children. For the simple reason - you can't evolve if all your children die from disease and unhealthy activities and behavior.