There is not a consensus on whether or not cow's milk is generally healthy or generally not healthy. With respects to what your opening post outlined, there are a number of issues that could be concerning to humans -- mostly growth hormones. And the rise in lactose intolerance is another instance that may point to problems.
But you can be sure that there is no smoking gun that would medically link cow's milk to any serious aliment in human beings. Nicotene has a smoking gun linking it to the proliferation of cancer cells within the human body.
We eat eggs but so do lots of animals(crocs, birds and lots of mammals).
We eat beaf but so do large preditors.
We eat asparagus but so do sharks and dolphins.
We humans drink cow's milk but so do ...
PLEASE finish the sentence.
Okay, this comment is baseless as far as it could be considered a defense of your initial proposition. Those animals you outlined are also too stupid to drink cow's milk, so it is pretty much pointless to mention that, because they don't, that it must some how be evidence that we are not supposed to be drinking it. By what cosmic rule does it violate?
Mankind has been using animals to feed us and to make jobs easier for as long as history has been around. While it is reasonable to question the ethics of it, and legitimate to question whether or not there are any actual health benefits or risks associated with it, this comment does not qualify.
“Tu ne cede malis sed contra audentior ito"