One of my hobby horses is couples having someone focus on home production, rather than have two full-time income earners.
Most of the couples we know have one spouse who wants to stay home (focusing on the kids and chores) and the other spouse being opposed to them doing that. Whenever the subject comes up, I encourage them to work out how much disposable income they would actually generate (or are generating) from the second job.
After accounting for taxes and many other additional costs (work clothes, vehicle, daycare, cleaners, prepared food, etc.) it's often the case that the second income is only like $10k per year. That's less than minimum wage while giving up all the benefits of additional parental time, home cooked meals, and whatever else.
That's the US case. I wonder how it's different elsewhere and how other people think about this tradeoff.