Much has been said about how if we just go back to a traditional society (women at home, values, religion, etc.) all our fertility woes will disappear.

Nope.

It doesn't matter. The decline in birth rates happened before feminism and more effective contraception (both of which led to different problems but are off-topic). A century ago UK was socially the opposite of what it is today but the same problem existed.



The only thing I've seen that without question reverses this trend is with people who are hardcore religious (Hasidic Jews, Mormons, etc.)

Interesting that right after WW1 and WW2 there was a spike in births.