Sorry, but I can’t agree completely with your statements.
I will say that more often than not folks dabble, both men and women, because they are missing something in their primary relationship.
However, when someone finds themselves in a relationship where the other person denies intimacy, whether physical, emotional or both, or where one lets themselves go to the point where their partner literally does not find them sexually appealing any longer, infidelity is more often than not going to be the end result.
I thank that folks dabble, both men and women, because they are missing a moral compass.