you’re joking but birthrate in china is falling as well.

step 1: send your men to a pointless war
step 2: potential mothers realize their sons would only be meat in the meat grinder
step 3: nobody wants to have children anymore
step 4: be confused??

Note that what matters seems to be (at least to me) not so much wealth but stability.

If there is a social safety net that provides for you in cases of need, that reduces the worries a lot.