Colostrum is more valuable than breastmilk

I keep seeing these posts about women wanting their milk to come in before baby is born to start a stash, or pumping to start labor. 
Colostrum is what your body produces before breastmilk and it is invaluable to a baby's immune system. Your body only produces it for a short period before milk comes in. pumping early is going to waste that valuable limited resource for your baby. Your milk isn't supposed to come in before birth (although for some women it does NATURALLY), so quit trying to force it.