Christian vs non-Christian illegitimacy rates

me:

Please break down the percent of modern humanity that live in nations with an illegitimacy rate over 10% by Christian (including formerly Christian but now secular) countries versus non-Christian countries.

Claude:

Good question. Let me reason through this carefully using what we already know plus some population figures.

Christian / Post-Christian world (over 10%):

Pretty much the entire Christian and formerly-Christian world qualifies here:

• Western Europe (~450 million): 30–70% illegitimacy across the board
• Eastern Europe (~300 million): Mixed, 13–48%, but mostly over 10%
• USA/Canada (~380 million): 40% and 29% respectively
• Latin America (~670 million): 40–87% across the board
• Sub-Saharan Africa (~1.2 billion): Predominantly Christian south/central Africa, high rates throughout
• Australia/NZ (~35 million): ~40%
• Philippines (~115 million): 52%

That’s roughly 3.1–3.2 billion people, and essentially all of them are in over-10% territory. The Christian world has almost no exceptions remaining — Greece being the lone marginal case at 9.7%.

Non-Christian world (over 10%):

This is where it gets more nuanced. Most of the non-Christian world is under 10%, but there are exceptions:

• Parts of Southeast Asia (Thailand, Vietnam, Myanmar — Buddhist, trending upward but data sparse)
• Some smaller populations

These are harder to quantify but relatively small — perhaps 100–200 million in non-Christian countries over 10%.

The summary estimate:

| C…