The value of milk in our diet is controversial.

Humans are one of the only animals that cultivate their food.
Food which is produced by animals (or plants) for their off-springs is considered healthy and high in nutritional value. (long before the dairy industry existed).

Like honey, grains, eggs, milk etc.

In the industrial world cultivation of animals and processing of food went to extremes that were not existent before.

We probably do have to go back a few steps; We probably do use too many additives we would do much better without in our foods and cosmetics; we probably destroy planet earth out of the greed of our species.

This has nothing to do with medicine. It probably does create new diseases.