A further problem involves the fiction of "half" - particularly involving a housewife, in fact that's really the only case involving a fiction today. Otherwise divisions usually go on what the parties really earned.
If you are a proud chivalrous guy that generously thinks that your housewife has the more difficult job, then why the fuck are you complaining if you have to pay her less than half in a divorce?
No.Really.Why?
I don't buy it that pregnant women are magical creatures, I don't buy it that women who sit home today do lots of work if they don't have small children at home, and I don't believe that women are just oppressed by men just because.
Until the laws change (and I am going to hold my breath until that happens) ... everything described above is going to be a basis for a woman to get money out of you.