"Although, as we have seen, nobody is lucky enough not to be born, everybody is unlucky enough to have been born – and particularly bad luck it is, as I shall now explain. On the quite plausible assumption that one's genetic origin is a necessary (but not sufficient) condition for having come into existence, one could not have been formed by anything other than the particular gametes that produced the zygote from which one developed. This implies, in turn, that one could not have had any genetic parents other than those that one does have. It follows from this that any person's chances of having come into existence are extremely remote. The existence of any one person is dependent not only on that person's parents themselves having come into existence and having met but also on their having conceived that person at the time that they did. Indeed, mere moments might make a difference to which particular sperm is instrumental in a conception. The recognition of how unlikely it was that one would have come into existence, combined with the recognition that coming into existence is always a serious harm, yields the conclusion that one's having come into existence is really bad luck. It is bad enough when one suffers some harm. It is worse still when the chances of having been harmed are very remote."