Domestic support really isn't either of our top 5 needs at this time. But sometimes it just takes looking at things with different eyes. Just some thoughts. I'm curious about the point of this question. And, perhaps it is more realistic of these women to recognize that their men are not princes - they are humans.
Realism is important to a marriage.
Having an affair is an extremely selfish act. Often, after reading the books available on relationships and the articles on this and other sites, when a WS comes back to the marriage, there is a greater awareness of that selfishness. Maybe a hyperawareness that leads us a bit overboard. But we have been asked to put up with and forgive the most selfish act in the world - and then been promised the world if only they can come back. Sometimes, once they're back, they simply fall into the old habits and we just can't play that game anymore.