The collapse of the height of bourgeois ideals - a shared commons, open markets, a globalising world - especially at the hands of the technological shredding of social fabrics, may incidentally lead to a TFR rebound as relationships become one of the few ways to survive. And you want as many non-intermediated relationships as possible - i.e. bound by blood, not circumstance or mutual gain. The state and corporation can no longer play mommy and daddy. The family will once again find its sociopolitical niche.