People take parenthood as much for granted as birth and death. You are born, you get an education, then a job, followed by marriage, parenthood and finally death. This is some kind of unwritten cosmic schedule that humans follow and no one really thinks about the progression of events as they live their lives. You just flow from one phase of life to another in a seamless fashion. For couples who discover that they cannot have children for whatever reason, the loss of parenthood, a basic ingredient of life, comes as a rude shock.