The economy of having children
Japan is now a threat to the loss of human population, the reason as you say, if we think in a common sense, children are not a burden on the economy, precisely without realizing those who do not have children that is the economic burden, life is sometimes strange, that's the situation.
From a financial point of view, they are, just like your wife, your parents and siblings and just anyone who depends on your earnings for their survival. And when parents do that like forcing their kid to become what they dreamed of is just a worse thing can happen to a kid because the kid will fail to live the life the way wanted and need to go through lot of mental pressure due to expecation and when he/she have a kid will just pass on the same thing and it will go in a endless spiral.