"But if everything that is natural is right, why in the world is not the birth of a baby as natural as the growth of a passion? If it is unnatural to control appetite, why is it not unnatural to control birth? They are obviously parts of the same natural process, which has a natural beginning and a natural end. A man who thinks all natural things legitimate has no possible reason for interrupting it at one stage more than at another. As Nature is infallible, we must not question what progeny she produces. If Nature is not infallible, we have a right to question the passions that she inspires. And then comes the joyous culmination and collapse; of calling a baby an unforeseen consequence of getting married."
-G.K. Chesterton, G.K.'s Weekly, July 2, 1927.