The bigger implications here are you have middle class and upper middle class people (ie people with careers and mortgages) NOT having kids, paying tax from their income to go and help people on low to no incomes to have lots of kids.
I've always thought imagine what we could do as a country (god forbid) if we actually supported the latter during that first year so they could
a) keep their careers
b) keep their mortgage payments up
c) have kids raised in house that teaches importance of work and being productive
ie shift the welfare support a bit further up the line to people who on the face of it don't need it to get by themselves, but need it in order to have kids and maintain their status quo in life.