[Umihito]

I'm not too sure.
Here in the UK there's been a lot of babies being dumped by their mothers lately, where they've been found dead. In my area alone there has been 2 cases recently.
Although those baby hatches leave no way for the mother to be traced, or for the child to know who the mother is when he/she grows up, surely it's a better option than the baby dying.
As far as the mother's post-natal depression etc goes, she would have that whether the baby is put in the hatch or not, so it may as well be there to save the baby's life.
As far as I know of, there's no such things here in the UK.