This is all good but no country in the world managed to turn the tide, even great policies in a rich Scandinavia.
IMHO, we overemphasized the dangers and impact of children, especially for women or career, and so couples have made the rational decision to have fewer children in industrialized nations, when given the choice.
I am not trying to convince you, but one rational / philosophical argument goes:
Imagine the thing you are trying to accomplish before you have children. Now imagine your neighbor lets his children die (or be taken away) so he can do that, because parenthood was in the way. Everyone is aghast. Yet we deny ourselves parenthood to do that thing all the time.