 There are reasons to think that these responsibilities do not go far enough. For instance Prusak (2011) argues that the gap between Brake’s ‘procreative costs’ and parental responsibility is not as pronounced as it initially appears. Consequently, for all practical purposes gamete donors have responsibilities edging on full blown parenthood. Conversely, arguments originating in the abortion literature imply that gamete donors need only ensure that their offspring have lives worth living. For a discussion of these arguments and a response see Brandt (2020). 