MILK is a fluid designed to take a 10 pound calf into being a 500 pound cow.
It's filled with hormones and proteins - but homogenization has severe impact on both due to the unnatural boiling heat.
No other species drinks another species' milk from infancy till death besides humans.
There is no way in hell that's natural or in sync with human evolution.
Human Breast Milk is the only thing newborn humans should be drinking.
Realistically, adults shouldn't be drinking it.
This is a special kind of silly. Colas, beers, wine, liquor and on and on. These are just beverages like milk with various properties and tastes. Saying humans shouldn't drink cow's (or goat, et al) milk is like saying humans shouldn't eat bamboo shoots because pandas eat bamboo . That really applies to any food for that matter. No sugar, no colas and so on. We should only drink water I suppose.