According to you, there is no way of knowing the heart and mind of a spouse, which is ridiculous. Lots of people, yes particularly women, see the warning signs but choose to act solely on their feelings. Then they come to the divorce court expecting a judge, who has maybe a few days a best to learn about your case, to make everything right again.
If you were misled by your spouse's character despite knowing him or her for ten years, why do you expect a judge to be able to see through them in three hours?
Excellent and pithy point.
Men see them too, but decide to act solely on their, um, other feelings. Look at the popularity of Angelina Jolie on FR for an example. Plenty of men here would marry her in an instant in spite of the overwhelming evidence that she is a lunatic. Men have a bad habit of marrying the best looking woman who will have them, regardless of her personal character. Acting shocked in divorce court later on is self-deception - most of the time he knew she was a psycho going in, but decided to disregard that inconvenient truth in light of her physical charms and the short-term ability to impress his friends with what he has on his arm.
It's the same impulse as the woman marrying the charming abuser thinking she can change him - vanity goeth before a fall. ;)