See that's total crap! The court system gives women the ability to jerk their ex-husbands around. Spiteful women can really take a man for everything he's worth with no justification.
That totally is not right, here in MN they just revised the child support formula to take into the women's salary in how much the father should pay. I had a friend who has a child with a women and a few years ago she found out that he was buying a decent size house so she took him back to court and won a judgement against him to pay more in support payments so he could not buy the house and so he said why have any motivation to improve his lifestyle until the child turns 18 and the payments are done.