Because japan is a highly competitive society where the kids who had the fortune of having financial resources poured into their education "win" and the rest lo

Because japan is a highly competitive society where the kids who had the fortune of having financial resources poured into their education "win" and the rest lose. The would be parents of the struggling middle class (quickly being eroded, just like everywhere else) feel that bringing in a child to this society without the financial backing ms chance of success would be cruel to the child.