men can have kids into there 80's if you live that long . women into their 60's maybe 70's . Kids the other sort of free slave labor then the whole process takes none of your time and you get the bonus of spending quality time with your kids while yelling at them while teaching life lessons not to mention getting all your brass spit shined and prepped ready to go for you , you got to love the up side to it all . A work force dedicated to your happiness or at least dedicated to making ammo to make you happy .