New calculus: "Between retirement accounts and welfare, society will support me in my old age. Children are really, really expensive."
It's economics, plain and simple. Of course there's a "top" and the "top" does dictate the structure. If you doubt that, ask: what percent of your income do you pay in taxes, and what percent of his income does your CEO pay in taxes (assuming you work at a typical bigcorp)?
I'm not saying that "yolo all the way to carrying capacity -- and beyond!" would be a better policy, but it clearly used to be the policy and isn't anymore. Personally, I think we dodged a big bullet and took a little one. The "little" bullet is still going to hurt quite a bit, though.