I think things should be split 50/50. It's not my fault if you are uncapable of earning a substantial income.
You spend $400 a month in groceries, there are 4 people in the house, then my childs share is 1/4 of that , $100. That $100 should be split 50/50 between the mother and father. Here's my $50.
Babysitting cost $200/mo? Here's my $100
Clothes cost $200/mo? Then you better stay out of the damn mall and start hitting some garage sales and thrift stores like every other American family that isn't living off my paycheck is doing when things are tight.
There are no more "incentives" for being married. Get married, wife sits around the house doing nothing and then winds up on The Wetlands fucking your whole neighborhood, you get divorced and give her 1/2 of everything plus possibly some alimony depending on where you live.
Throw in a kid or two, (worse if you get stuck for child support and it's not your kid) and you're fucked for the next 18 yrs or longer if they go to college.
The system is definately set up where the woman can make out like a bandit. Womens lib, equality, etc.. but the support system hasn't caught up yet.