When i wander around in the Wasteland i hardly see any children. There are so few children, that even the Post Apocalypse would face an demographic crisis the next 10 years. There so many dangers from giant Ants, Supermutants, Raiders, Diseases and all that stuff that boosts high mortality, and then people don't make any children? If this would be for real, just in part, people would be breeding like in some 3th World Country(which the post apocalypse actualy is) or there wouldn't be any people.
I think Fallout should add more Children, also to basicly have anyone to use these Children related Perks on. And they should add an Teenage Age Group, because most likely these are the ones who make up the Raider Gangs. Not to speak of that Children ofcourse should be able to get killed, and then have a few child soldiers here and there. Because Fallout is already a Game for advlts, and advlts can deal with stuff that happen in the real world. The Great Khans as a very backwarded Tribal Society would most likely relate in the majority on Child Soldiers and fighters around the Age of 15 to 19.