Cassie, what doesn't get acknowledged enough, and talked about enough, is that the decision of a Catholic couple to use contraceptives is (in every case I have ever known about) a decision by the couple.  That means Catholic husbands are also part of the decision.  

Still, for a woman who wants a career along with a family it is a decision that impacts her the most.  Same for a woman who simply does not have the health to bear child after child - as is true for many women in my family for several generations.  Contraceptives and sterilizations can be life savers.  

There is nothing wrong with women/couples choosing to use NFP and for Mom to stay home with the children.  But, it is not a choice all women want to make and contraceptives make it possible for other choices to be made.  Being a non-working Mom is also not a decision that all Moms can make.