While everyone alive today is guaranteed to have ancestors, no one is born with a similar guarantee to have descendants. In a parallel truism, everyone alive in the year 2200 AD will be able to trace his or her lineal ancestry to a parental stock in the year 200 AD. This book addresses two questions 1) Which facets of current cultures are aligned with enhanced fertility of their members and which facets of current cultures are aligned with reduced fertility of their members? and 2) What evolutionary pressures sculpted the reproductive psychology of current women and the behavioural consequences of that psychology?.