If marriage causes less poverty, then it because of household income, ie, somehow, magically, marriage causes employment...JOBS!
The point still remains, you have the cart in front of the horse.....single income homes are in poverty because of the lack of income, ie, our economy requires 2 earners to have any chance of getting out of poverty.....and even with 2 earners, a huge number of those households remain in poverty.
It is due ENTIRELY to declining wages.
You Bell Curvers ALWAYS make this a morality based argument and veer away from the economics.
I'll agree that there will always be people who make poor financial and lifestyle choices, thus there will always be some sort of poverty, but for the most part it's possible to eliminate it.