objectively, once women became relative equals in society (say the 70s, or even 90s whatever) there became no reason for men to get married unless you're religious
sure you get tax benefits, but what else, exactly? ............ nothing you couldn't also get from a long term, serious relationship where no marriage is involved
b/c when it likely ends, unless you're a stay at home dad/husband you're done son. So not only would you likely have supported (partially, or fully) someone else making them a dependent not a spouse, you then OWE THEM money after or at least splitting assets they did nothing or little to earn.....Wait, what? Shouldn't they OWE YOU backpay for supporting them? You ideally support a female daughter till the age of 18, you don't then owe them money and meals b/c they are used to that and it's all they know, right? Why is an adult spouse any different?
It's an antiquated system (divorce, mainly) based simultaneously on the premise that we're all equals, and women are completely inferior and apparently can't support themselves
edit: not 'women' per se, but whomever earns less or is more likely to be the stay at home spouse....