Baby humans do eventually grow into productive adult humans who pay taxes, and parents who are given generous parental leave do better at their careers in long term. Therefore both are beneficial to a society. Of course a private company won't care for either - that's why in sensible countries you get 12 months of maternity pay, majority of which is paid from the social fund not by the company. After all we all pay taxes for something, no?

Surely you're not comparing the critical initial development of a human child to... having a pet, right? I sincerely hope I'm misunderstanding your position.