Creatures produce as many offspring as possible, and external forces kill the inferior surplus.
In this way, balance is maintained, and the species remains vibrant. It is critical, for the future of mankind, to find a way to compromise on this natural law. Humans must reduce the rate of reproduction, or eventually face external natural forces that will control man's numbers in ways that have no room for compromise. No single change in human behaviour would have a more profound affect upon mankind's destiny, than a reduction in the birth rate. Aside from sexual aberration, the act of mating is not the primary problem, it is the pregnancy rate.