Nc I think 'some' men have been so hurt/disappointed in early relationships and don't seek to understand what happened that they avoid the risk of being exposed to this type of hurt again by bailing out the minute their vasopressin starts doing its job for fear of feeling the same pain again. Clearly, 'some' women do this too.
I'm now lobbing in the generalisation hand-grenade as I think that most relationships end because the woman has had enough [caveat for Bant, Voice et al] for whatever reason and some of these break-ups result in screwed up husbands and wives where the women are more likely to seek advice/help/counselling than 'some' men. So my hypothesis, as yet unproven, is that the separated/divorced man is more likely to be fucked up than the separated woman once the main hurt of separation is over. Hence we keep tripping over fucked up non-committal twunts [insert twuntettes if you're equality antennae are twitching and you want to involve the European Court of Human Rights].
The trouble is we're human. We're programmed to hunt and programmed to mate with the best, despite the back-drop of monogamy that society instills, so we keep going back for more ...
Right that's my head blown off before it disappears below the parapet ...