I don't actually agree that having a baby is purely a personal choice. It entails personal choice, but it's bigger than that. People, and thus children and, indeed, parenting are social goods. They affect all of us, so we all have an interest in how people are raised and we all have a responsibility to contribute to improvements where we can. It's a fine line, certainly, between interfering and supporting, but it's a necessary balance.

So, anyway, I think it makes very good sense to offer financial support to parents who take time out of the workforce to care for their children - the assumption being that this is better for the children, and thus better for all of us. And likewise, if you support the notion of vaccinations as an imperative of public health, then it makes sense to promote them. I'm not convinced this is a very good way of doing it, but anyway.