I’m not sure about all of that, but a couple of relevant points come to mind: men who’d lost their wives tended to die sooner after them, than women who’d lost their husbands source, also men are something like 6 times more likely to leave a sick wife than women are a sick husband (source.
So while I’m sure there’s more nuance to it, the general trend seems to all point the same way - men need women a lot more than women need men, they require more care but are also quicker to discard their partner when they can no longer provide that care.
I’m not sure about all of that, but a couple of relevant points come to mind: men who’d lost their wives tended to die sooner after them, than women who’d lost their husbands source, also men are something like 6 times more likely to leave a sick wife than women are a sick husband (source.
So while I’m sure there’s more nuance to it, the general trend seems to all point the same way - men need women a lot more than women need men, they require more care but are also quicker to discard their partner when they can no longer provide that care.