Having children is the essence of existence for every creature  The most basic purpose of every human being, like of any other animal, is to reproduce, thus ensuring the continuity of ones species. Reproduction is even included in our very definition of life “the state or quality that distinguishes living beings or organisms from dead ones and from inorganic matter, characterized chiefly by metabolism, growth, and the ability to reproduce and respond to stimuli”.* Our bodies (physiological features), behaviour (flirting, dressing up) and sexual drives all point to that fundamental aim of our lives. It is only by having children that we can fulfil the most natural goal of our existence. Until very recently the family and ensuring its continuance has been the goal of almost every human. This is shown by how hereditary has been one of the defining features of almost every society in history, whether it is in government; through monarchy or an aristocracy, in the economy; through passing wealth down from one generation to the next.  * Collins English Dictionary, 2003,