My theory is low fertility rate is the "cost" of equality and women being in the work force. It becomes quite difficult to have a career if you have more than 1

My theory is low fertility rate is the "cost" of equality and women being in the work force. It becomes quite difficult to have a career if you have more than 1-2 kids. And balancing two full-time careers with even 1-2 kids is very stressful. Either way we should definitely worry about it, we should try to find ways to reach an equilibrium. Whether that's more subsidies for families or not I don't know. In Sweden, free (pre)-school, college, 18 months maternity/paternity leave, free healthcare and dental care up to 18, plus monthly allowance per child has not had much effect on the fertility rate as compared to the US, so it seems that doesn't quite work. But maybe there's something else/more we can do.