LADIES- Why do you allow yourself to be a baby mama and act like a "wifey"...but the guy won't marry you?

Probably because they thought that having a baby and moving in together would eventually lead to marriage. That's how they get themselves into that whole situation. Then when they realize that the guys are not gonna make the commitment of marriage given the fact that the women have already allowed them to play house instead, the guys figure that there is no longer any point in marriage. He's more likely to get a more generous custody arrangement of the child(ren) and not have to pay alimony if they split.