I know on PETA's website they say "Cows produce milk for the same reason why humans and other mammals do: to nourish their young. But the millions of cows who live on U.S. dairy farms are forced into a vicious cycle of continuous pregnancy so that they will produce milk for human consumption." [1]
Only reason I really looked into this is I have a friend who's vegan and I'm like "What's wrong with milk? How are you hurting them?" since not eating their meat. Thinking cows that made milk were some magical special animal that main purpose was just making milk.
I've never been a huge fan of plain milk, but I do love ice cream, milk in coffee, mashed potatoes, tomato soup I like with milk better, etc.
[1] https://www.peta.org/issues/animals-used-for-food/animals-us...
If cows are forced into continuous pregnancy, it's more likely to be because beef is very profitable...
Not true - a woman will keep producing milk for as long as it is being taken. A woman could continue to express milk indefinitely after stopping feeding their infant. As an aside, lookup "nursing maids".