I think there are several reasons for it. A lot of abuse in marriage, domestic, substance, top reasons given. Porn is more accessible than ever before, making expectations in intimacy very different than what our parents had. The church has declined and very few couples have pre- marital counseling. Therefore essentials like communication, how to argue fairly, how to fulfill your role in the marriage are all being missed.Then once there is a marriage problem, who do you go to for help? Very few churches are any help in that area. My sister is in an emotionally and mentally abusive marriage. When they went to their pastor for help he told them to "fight naked then you'll no longer be angry with each other." While this may be a cute response, my BIL was bashing holes in the wall, busting phones and computers and at one point threw all of her clothes in the yard and told her to get the F out of the house. 20 yrs later she's still with him, against my advice. Her reason for staying? She loves him. And I believe her. No one would take the abuse my sister has taken for that long if she didn't genuinely love him. So it seems women are quite capable of love, very deep love, but we do have our limits. Don't pee on us and tell us it's raining (not you) Women know many times in their heart of hearts what's going on, and they hold on for as long as they can. Everyone has a breaking point. None of this means some woman can't have an affair, be unloving or abusive of course. But what the OP is trying to assert is utter nonsense. My own sister is proof.