I wonder why, in all of your possibilities, in none of them was the wife cheating. Or the wife was bored. Or she just decided she could take money from him via the courts. I have a friend that was cheating on her husband and she's still the one filing for divorce, plus she wants part of the value of the home that he paid for while he was supporting her. An old friend of the family, his wife was cheating on him with their UPS driver. Dude was delivering package to her house every other day while the husband was at work. She even hit on me at one point. She filed for divorce when she eventually got caught.
Yeah, plenty of guys are screwing up marriages, I get that. But 80% of the time? Or even 70% of the time? That's a little bit harder to believe. It is noted though that no one here is even considering the possibility that the wife can be the one at fault. In two posts you gave several examples of what could be going on, and in all of them, it's bad men.