Weak men are slaves too, there's no gender gap there. I can recall seeing Powder Gangers bound and ready to be taken to become slaves and there is a teenage boy in that "Left my Heart" quest. There is obviously an issue with birth and death rates in the Legion, desperate times call for desperate measures. Only women can give birth, otherwise I'm sure they could also be useful as bullet stoppers.

Not to mention those 2 little boys that run up and down the Fort stairs training to become Legionnaires, slaves as well, everyone is.
I just couldn't be arsed explaining the same stuff over and over and over so a sarcy response was given