Falling fertility on the left as key driver of US birth decline

Cultural Messaging and Attitudes Toward Childbearing

• Several comments tie low birthrates to decades of cultural messaging: environmental cartoons urging “small families,” teen TV and PSAs framing pregnancy as something to fear or avoid.
• Others push back, arguing structural conditions (healthcare costs, housing, childcare, precarious work, immigration insecurity, attacks on reproductive rights) make early childbearing irrational, not TV.
• Some see it as “idiotic” that a society treats its own reproduction as a negative; others argue society has made having kids “batshit insane” before mid‑30s.

Left vs Right Fertility and Confounders

• Many posters question singling out “the left,” citing education, wealth, urban living, and housing as obvious confounders.
• Defenders of the paper say these basics are controlled for in regressions and that a political–fertility gap is well-documented in demography.
• There is interest in subgroup questions (e.g., urban college-educated conservatives vs progressives), with claims that the gap persists even when controlling for key demographics.

Religion, Values, and Selection

• Strong link made between higher fertility and conservative religious cultures (evangelicals, Catholics, Mormons, ultra‑Orthodox Jews, Amish, some immigrant/refugee communities).
• Some frame this as “Darwinian selection” for beliefs that prioritize large families and transmitting values.
• Others object to biologically or evolutionarily justifying lack of empathy toward disabled, abused, or queer family members.

Economics, Women’s Education, and Life-Timing

• Multiple comments emphasize women’s education as a strong driver of declining birthrates, even in countries that subsidize fertility treatments.
• Left-leaning would‑be parents are described as wanting to ensure high living standards and stability before having kids, often delaying into their 30s and then running into biological limits.
• Some point out that even cohorts doing materially better than their parents still delay or avoid children, implying non-financial factors too.

Policy Ideas and Ethical Tensions

• Proposed levers: subsidized fertility treatments, heavy child-care/early-years subsidies, pro‑natalist tax schemes, or even (often critically) weakening sex education to raise teen pregnancy.
• Others suggest accepting smaller populations and redesigning economies around decline; critics argue this risks poverty and pension crises.
• Some argue the only reliably effective strategy seen so far is strong religious pronatalism and partial isolation from low‑fertility mainstream culture.

Methodology, Terminology, and Scope

• One summary notes the paper is a “plain vanilla” regression on a longstanding US survey.
• The title is criticized as implying causality, whereas the study itself is correlational and limited (e.g., effects most clearly shown for white Americans; black respondents’ ideological self-labels may be noisy).
• Several point out that in demographic usage, “fertility” means realized number of children, not biological capacity, which contributes to confusion.

Anecdotes vs Data and Unclear Points

• Some individuals report being surrounded by babies in left‑leaning circles and suspect a “stealth baby boom,” but others counter with national statistics showing ongoing declines.
• There is broad agreement that fertility decline is multi-factorial and that no consensus “root cause” or scalable fix exists; this is explicitly called “unclear” by participants following the issue closely.