eleusis - I am not going to get into this lengthy, pointless debate that already has been done to death. There is plenty of evidence out there in books, articles, reviews, wisdom passed from generation to generation that contented, well supported mothers make better primary carers for babies and small children than nannies, creches, grandmothers, fathers, siblings etc and you know it.
But that fact does not in any way invalidate mothers' requirement for financial security, intellectual stimulation, participation in the wider world, company etc which careers can provide.
The difficulty is in the reconciliation.