People change my dear....Remember the Burning Bed with Farrah Fawcett??based on a true story, she killed her husband after years of abuse ONLY expereinced after they were married..
Betty Broderick killed her husband after he left her abusive ways, something that did not happen while dating, many stories of this nature time and time again..
Think Laci Peterson had one inclination while she was dating Scott Peterson that he would turn into a monster, commit adultery and kill her and her un-born child!!!
Of course they do. Marriage is not about "I'll live with you until I change." Marriage is a commitment. Unfortunately, too many are ruled by their feelings and can't seem to comprehend what a commitment is let alone live by one.
And yes, it takes two committed to the marriage.
I've never even implied that people should stay married to an abusive person. What I DID say is that, if you are going to stay married 'for the kids' then live out that commitment and be kind to your spouse.