So vegans can't breastfeed their children?
Must be hard to be a vegan, considering all the things that are often made with animal products. Stuff like safety gloves, glue, anything with gelatin in it (including beer, wine, juice, pill capsules, tablets, sponges, paper, copper, brass, explosives, bullets, paintballs, plaster, cork, photographic film, x-ray film, etc), fertilizers, concrete, matches, book covers, wallpaper, train brakes, coloring pigments, shoes, sandpaper, countless medicines (like herparin, insulin, heart valves, etc), filtered cigarettes, lubricants, biofuel, soap, washing powder, fabric softener, paint, candles, shampoo, hair conditioner, foundation, crayons, toothpaste, antifreeze, paint brushes, BREAD... and countless other products.
I couldn't deal with having to research everything I ever use to make sure it contained no animal products in it.
That's, of course, ignoring the many disturbing philosophical problems with the position, such as how totally arbitrary it is ("no animal products for any reason" is arbitrary), or how logically inconsistent it is to be opposed to using those products oneself, but still being fine with it the products being used to one's benefit as long as it's other people using them on one's behalf.