That is why we’re trafficking Third Worlders here - to fill our housing stock, store aisles, and most importantly: public schools.
The most visible aspect of the negative birthrate in my area is the absolutely horrible parking; childless young people move into illegally converted two family homes (that formerly housed a regular family) and you end up with cars all over the place (without off-street parking for the tenants, who have moved into an area zoned for single-family homes).
The second most visible aspect of the negative birthrate is the masses of foreign children in the school system - funded by the homeowners.