A biological/chemical substance dangerous to humans/environment
If Adolf Hitler did not exist, and you presume that there were no concentration camps for Jews, then how do you explain the death of SO MANY INNOCENT PEOPLE? Sorry, but it's my belief that Adolf Hitler was real and so were Jewish concentration camps. I don't agree with and definitely do not support what Hitler did, but I do believe that it did happen.
The main advantage could be related to not leaving babies out in the street, mostly in countries where the weather is really harsh. And also, to avoid any kind of danger a baby can suffer just for being in the street. What is more, a mother who does not want that child can make sure, she is leaving him/her in good care and her identity will not be revealed or known.
On the other hand, the concept of 'bin' is not a proper term to use in this case. An unwanted baby is not trash, so he7she should not be associated with this idea. Maybe It should be wiser to resort to another term for the idea.
As regards sources, many people decide to leave their babies in a church or hospital or even hand him/her over a family they know.
In some dramatic cases babies are abandoned in trash cans or put into a garbage bag anywhere.
It means that their words didn't give any idea to anybody
