Earlier quoted context omitted.
It's an outcome of the expectation that people earn their living. People work less today than they used to, but a larger fraction of that work is paid. And it's a consequence of making divorce legal and socially acceptable. Traditional marriage was primarily an economic contract. The wife assumed the responsibility for running the household, and the husband had a lifetime obligation to support her. But if you stay aw…
> "Traditional marriage was primarily an economic contract." I don't buy this. You can, for the purposes of your argument, reduce marriage to being something like an economic contract, that's fine; but, in reality, that's not what marriage is/has been primarily about. Also, solving the burden of work for one sex isn't a solution. Granted, it's better than nothing.
Ancient societies' marriages we have records about were principally about economics and politics.
Maybe the poor were having love marriages. We don't know because most of our sources couldn't be bothered with them. But to the degree we have evidence, it's in even poor landowners preferring to marry children off to the owners of adjoining plots. Like, maybe that's a coïncidence. But probably not.