Two things.

First:
http://img26.imageshack.us/img26/6629/lvlup00087.jpg

Second: Who says the mass breeding sessions behind closed doors at the mithra homelands hasn't hit it's centennial and is ready for a break? You'd think the constant sex would kill them quicker than lack of breeding.

Hell. Could even be a jail break of sorts. Men constantly complain about the company of women. You'd think being locked away, no escape, surrounded by children all day.... They would want to escape. o-o