Board Thread:Questions and Answers/@comment-25801533-20150531094407/@comment-10452902-20150604012148

@Coolishy77: Well, they say that whenever life begins, a life ends and life is ending every second in our world lol plus with the outlaws that the Soul Society has, it isn't unlikely souls are dying there too. It's possible that only the noble clans can have children however, I doubt that is the case since there is hints that people not from a noble clan have been born in the Soul Society such as Kenpachi's lieutenant and maybe Kenpachi himself.

@Firemonkeyjoe: Good point.