Even though I've officially joined the ranks of those moms practicing "extended breastfeeding" (that is, if nursing once a day counts), I cringe every time I hear someone call formula "poison." It's not poison; while it isn't an exact replica of breastmilk, kids thrive on the stuff.
Except in China, where at least 6000 infants have been poisoned by melamine-laced baby formula. Remember the pet food scandal that caused kidney failure and killed thousands of dogs and cats? Same stuff.