Food: Cow's Milk

Q. 1. Why do we drink milk from the cows? Is that not also inflicting cruelty upon them?

Q. I was reading your question and answer section on "Cow's milk" (Digest 19B), because I recently got some information that the cow's milk in America comes at the expense of a lot of suffering.  The cows are fed hormones and other things so they could give more milk, which makes them suffer a considerable amount.

Q. How can we consider milk as vegetarian food since it is coming from the cow, being an animal and how come the milk is sacred?

Please refer to Digest 19B.