"So you're more socialist in your leanings? Why not make it lower taxes for everyone who is productive, regardless of children or no children?"
You're almost as bad as the MSM. You seem to not be aware of what's down the road in just a couple of decades in Europe, and much after that in the rest of the advanced countries of the world. To help get you up to speed, read this:
http://www.opinionjournal.com/extra/?id=110007760
In that article, you'll see that unless drastic action is taken, Europe will essentially be Muslim-run, with an old and gray native population, in about 3 decades.
Your solution seems to say that bigger houses and bigger cars (i.e., more productivity) will compensate for the extinction of cultures. There is a lot more to this, and the stakes are much, much higher.
Again, there is no developed country in the world that has been able to even come close to maintaining its native population.
It is up to the developed societies to decide if they want to survive, and there are only 2 ways that I can see working (which is stick women back into the kitchen, or to make childrearing economically competitive). While your "fairness" concept may indeed appear just, it simply accelerates the end of our societies.
Either we step up to that, or there is no future, as Europe is showing the world, we can no longer have it both ways.
Well, before sending me off to read, you can finish my own post, where I addressed your points in the last paragraph. Europe has allowed immigration to flood its cultures, for example. And are you not one who recognizes that if illegal immigration is lowered, wages of the lower pay scale will increase for Americans?