Do I Have the Right to Be?

Many philosophers agree that who we are is dependent, at least in part, on our origins.
 Consider your own identity as a case in point.
You have the distinctive property of having grown from the particular fertilized egg from which you in fact grew.The fertilized egg was formed by the union of two cells deriving from your biological parents, who conceived you at time X. If they had conceived a child earlier or later, it wouldn’t be you. It wouldn’t be you because it wouldn’t be developmentally continuous with the actual fertilized egg from which you arose. This has far-reaching implications; it means that if at any time in the past an event occurred that interfered with the relation between the egg and the sperm whose fusion produced you, you would not have been born.