I do think your choice of wording "government should foot the bill to keep their lifestyle at their "pre-baby" level" is a tad inflammatory. While obviously that would be the aim of keeping paid maternity leave at usual wage level for a period of time (not suggesting a year!), it is not for "lifestyle" reasons in the way that I think you are suggesting. Its for mortgage payments and bills that don't suddenly go away when you have a baby. The Govt WANT people to have babies, that is why they offer financial incentives.
And just lastly, can you tell me which countries we are well ahead of in this regard? I assume you are comparing apples with apples? The only one I know off the top of my head is the USA and that is nothing to be proud of. They are shocking!!