Of course, if such an apocalyptic event were to occur, the most powerful wealthy men with the most resources would end up with harems of beautiful women to take care of. While the beta guys would be left to fight over whatever scraps were left.
Women would seek out these harems so that they could be well cared for, and/or the powerful men would take them by force.
Fortunately, most everybody on these forums are alphas

(note the wink, Iceberg), so I'm sure we would all have vast resources and harems, while sitting back laughing at all the AFCs.