d, you're supposing an awful lot about how the situation might have been. Fact is, there are a lot of women out there who want what they think is the status quo: husband away during the day, providing plenty of money, newish car(s), family going out to eat once or twice a week, cable tv, buying whatever you want at the grocery store without regard for price, big X-mases, no stress about being able to pay bills, etc., and if hubby doesn't provide it, he's thought of as inadequate.
Yes, there are many women who are shortsighted and only realize after the divorce that life doesn't work the way they thought.
cousin_it, in the US, women have all the advantages when it comes to marriage. If they want a divorce, almost by default the legal system provides them with the kids, house, alimony, and child support.