I'll rephrase it:
No man, in all known history, has ever mistreated his wife in such a way that she had to leave the marriage to protect herself or her children.
Really? No man has ever viciously, systematically physically or sexually abused his wife or his children? All men are sweet little angels, or perhaps, merely misguided? You've never read stories about animals who torture their family members? Who inflict upon innocent children and smaller, weaker women the most unspeakable acts of cruelty?
And these women should stay in these marriages...why, exactly?
Some people are unrepentant. Some people ARE evil. You're living in a fantasy world if you don't see that.