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natalism

n. pronatalism; an ideology in favour of childbearing

Wikipedia
Natalism

Natalism (also called pronatalism or the pro-birth position) is a belief that promotes human reproduction. The term is taken from the Latin adjective form for "birth", natalis. Natalism promotes child-bearing and parenthood as desirable for social reasons and to ensure national continuance. Natalism in public policy typically seeks to create financial and social incentives for populations to reproduce, such as providing tax incentives that reward having and supporting children. Adherents of more stringent takes on natalism may seek to limit access to abortion and contraception, as well.