Now that one needs to have had a child to have a legitimate argument, where can we take it from here? Let's see, I suppose having a son of military age gives you the most moral authority. Unless, you know, your son is actively serving in the military and you support him. Or your son died in service for his country, and you don't hate the president, and are proud of your son's service.
So where can we go from there? Number of children? Difficulty/length of deliveries? Difficulty during pregnancy? Mastitis? Spent lots of nights sitting up with sick children? Maybe we should come up with some kind of point system. A Caesarian gets you so many points, morning sickness all nine months gets you so many points. I'm feeling full of moral authority already.