Need a Plot? No problem! That's what infertility is FOR!

You know, even if it's a rather entertaining piece of fiction, it also bugs the hell out of me that Hollywood thinks it's a logical leap that women who cannot have children will randomly buy an infant from a junkie and then later casually knife, dismember and stuff the body in a toy chest when the (reformed) junkie comes to collect her child.

Because it is completely the same thing.