To a man of character, he will never desert her. // Doug, I agree with your thoughts in general but would like to add some moments that I see here.

One of the reasons for parting with the spouse may be such. When a woman and a man get married they (at least some of them) sincerely want to keep their deep mutual relations and they follow this direction. But nobody can predict the way of a person in time. Sometimes one from the couple goes ahead, strives for development in many spheres, including the one connected with the consciousness, while the other prefers to stop and limit oneself to only a warm couch or raising children. Unfortunately, this does happen (  Therefore it is important to try to foresee at least approximately if you both will look in a similar direction after a few or many years.

I am aware that most of you ladies do not believe this kind of man actually exists. That is something totally different. My experience is that many, many, many good women choose "Bad Guys!" Then they are unhappy because they are bad. // I see 2 parts of the question here.

1)      Men of such kind exist but there are not many of them on the Earth.

2)      Women indeed often choose “bad guys” because this traditional pattern is exactly typical for the patriarchal society (every society even nowadays more or less belongs to this type). Under this pattern rude, selfish and brutal men who consider it a shame for themselves to do chores around the house and care of their children and believe such activities to be “only for women” have the image of “the real men”.

Of course, both these reasons are interconnected.