Sorry but your argument doesn’t really matter one way or the other. From what I can tell going through one divorce myself: Is that all 50 states are no-fault. The woman you speak of should get alimony or maintenance for number of years. In addition to child support. But it really doesn’t matter who cheated on who as far as I am aware.
In the prior era what happened mattered. Not today.
Imagine a scenario such at this: Guy has a wife with 3 kids. She is a stay at home mom. He makes all the money and then she has an affair with his best friend. In the “best interest” of the child she is most likely to be the custodial parent and keep the house. Her ex husband can watch his former best friend and his ex wife get married, live together in his old house while he is alienated from his kids and helps pay their bills.
You can do worst case scenarios for each sex. But family courts overwhelmingly favor the woman. And since women initiate approximately 70% of the divorces you know millions of men are reluctant or just hostile to marriage. And many women have such low standards, that these guys don’t really have a problem finding a girlfriend for love/affection. It’s messed up no doubt.
One other thing that is interesting is that this isn’t an American issue. It is an issue that affects the western world. Germany has a declining birthrate. Italy even worse. Japan has been in decline for sometime. Japan doesn’t even have the feminist dogma that affects America/Europe. The gist is the same....guys find marriage less attractive than their fathers and grandfathers.
If you go to youtube and do a search for mgtow you will find a rather large number of videos extolling the virtue of being a bachelor and the dangers of marriage.
Things are more off the rails than older folks realize imo.