Most people are interested in having kids and know that a child needs both a mother and a father. Previously couples could afford to have the mother stay home while the father made the money, which is the dynamic depicted in the OP picture.

Now that virtually all working class couples need the mother to work too to make child-rearing possible, we have a plethora of other issues fucking our kids up that people are forced into. Daycare, for example, is absolute shit. And then they go to public school in a similar way once they're school age and that's basically the same thing, and then computers went pocket-sized and parents are making the mistake of letting them raise their kids (though we were doing the same shit with TV before, not good either but clearly not as bad as smartphones/internet/social media).

But you are right, obviously it's easier financially if you don't have kids or a roastie spending all your money. I myself am currently in a recuperation period. I moved recently and decided, without going too much into detail, to downscale my cost of living significantly. I'm single and not currently looking for anyone because I need to build some stuff up first. But uh, I do want kids at some point, so.