Drinking the milk from another species designed to grow that species babies is wrong. Would you even drink human milk designed for human babies as a grown adult?
Nature is not out to help us be healthy, despite all the books written about it. A plant would gladly poison us (many try) if it's seeds would sprout better from our dessicated corpses.
Totally not what you were saying, I get that, but I think it's always a good public service type message to spread.
Well, no, but I wouldn't eat human muscle either... but I'll eat a cow's.