[midoridensha]

We already have government institutions for educating kids, called "schools". We just need to expand these institutions' roles so they including all the parts of housing and raising children until they're adults. It could done far more efficiently than by relying on unpaid volunteers, and paid for with much higher taxes (people won't need money for big houses and raising kids any more when the State takes over this role).

Honestly, I don't see how this solution could possibly be worse than the only viable alternative, which is to simply accept a sharply shrinking population and sit around and wring our hands about how no one wants to have kids any more.