I believe marriage or monogamy was invented to equally distribute females, to give lesser and weaken men stake in society. In turn these men created civilization. Chads are charming but they are not smart types who created humanity. In return for services to alpha , betamen were given woman, often by arranged marriage.Thats why most men are betas, they are result of this un-natural distribution. Women never liked it and cucked men by millenia but still most managed to pass their genes, though they were not suppose to.
Now, because women has been given choice, they give these men no chance to reproduce and such countries like Japan start to collapse, because there is not enough 'high status' men for huge pool of women.