In his applied moral philosophy, Kant formulates the parents’ duty to make their child happy. I argue that, for Kant, this duty is an ad hoc attempt at compensating for the parental guilt of having brought a person into the condition of existence – and hence also having created her need for happiness – on their own initiative. I argue that Kant’s considerations regarding parental duties and human reproduction in general imply arguments for an ethically justified anti-natalism, but that this position is abolished in his teleology for meta-ethical reasons.