Fairly, but Western countries started as very religious and are losing that at varying rates. Heritability is real but far from absolute. All other things bein

Fairly, but Western countries started as very religious and are losing that at varying rates. Heritability is real but far from absolute. All other things being equal I'd expect it to reach an equilibrium. I don't think all other things are equal in this case, and nonbelief becomes more attractive over time (for better or worse).