I find this hostile wife phenomenon pretty confusing for several reasons:
Partial explanations of the hostile wife phenomenon offered by Darwin, de Wolf and de Wolf, Quentin, C (#44), Robin Hanson, and others:
None of these is satisfying. Got any more?
On the off chance the somewhat promising social disapproval hypothesis is correct, I warn any prospective hostile wives reading how deeply I disrespect them for preferring their husbands dead.