This article positions the sinthomosexual in relation to kinship, climate crisis, and vulnerability. By placing Lee Edelman’s version of queer in the modern family, the sinthomosexual – here presented in the form of the childfree woman – is positioned not only as against reproduction, but also against certain versions of community and kinship. The article investigate what this position is dependent on and gets subjected to in the wake of the dismantling of the welfare state and the privatisation of economies, communities and identities. This is done by a close reading of the so-called anti-social turn in relation to different feminist versions of kinship and community – from radical lesbian feminism to posthumanism. The article also gives a historical and cultural background to the position of the childfree woman.