Do we eat different kinds of cows than we drink the milk from? Or are the cows we eat the same cows that gave milk for a while? What's the difference between the cows? Different breeds? How is the life of a dairy cow different from the life of a meat cow?
And also, how come adult humans will drink the breast milk of a cow but not the breast milk of a human? What is it about cow milk that we like better than human milk? Wouldn't it be healthier to drink breast milk (if it happened to be readily available) of a human than of a cow?
How come we don't drink the breast milk of a pig or a cat?