User blog comment:Crazy sam10/CoDWiki News - December 2nd 2012/@comment-3062440-20121204215303

Answer for the question: I say because it deformes the breasts of the woman. They (at least most) won't let an adult drink their breast milk if both don't need to. They ought to feed their babies when they most need, so it happens... and I bet it's not very comfortable.

(Do I win?)