I would be strongly for women having the choice to bring small babies to work with them (if appropriate/safe) or on site childcare as an option. Emphasis on choice though. It definitely wouldn't suit everyone.
I too would have returned to work earlier if I didn't have to leave DS. Though now I have done more research into childminders I think I'd be happy to use a childminder from an earlier age, say six months? Still a bit of a pain for breastfeeding though.
They say that having little babies in slings where they can observe adult interaction is very good for them, probably better than a busy baby group or a singing group for a baby who can't even talk yet. Not that these things don't have their advantages though.
They say women have a choice, but it is incredibly difficult to combine working effectively and being able to care for your child 100% in the way you want to. Any form of childcare is going to involve compromise.