I went to a small group of vegan people at a meeting last night. I'm surprised to learn that milk is not good for you because it's only for cows that feed their calf, and it is not for us as human. Milk screw up your body naturally. That's what I'm trouble to believe it. I didn't bring my notebook to write it down from the meeting. Do you know anything about that?
They said that the kids shouldn't drink a milk. For babies, they should be feed from their mother's breast which is important for natural antibiotic to build up their defense. It looks that God created all mothers to feed their babies in order to make them alive and defense against the evils (germs and bacteria).
Oh, and btw the way you are quite right. Breast milk transmits antibodies to the babies (which do eventually wear off as the child builds up their own immunities). This is why, when polio was still around, it only struck older children (ie past infancy).. because as a baby they had been protected by their mother's immunities. (Natural vaccination kind of)
As far as being bad for people-- this is true. See my above post
(Drinking the cow milk is no different from drinking dog milk-- which is meant for puppies.) Most of the world does not/did not drink cow milk until incredibly recently because cows were not indigenous to most of the world.
Don't get me wrong-- if you are starving to death and it is milk or nothing, by all means drink the milk!! You have to get the calories from somewhere. And it is not (for most people) going to cause them to fall over and die instantly, but the increase in lactose-intolerance is a further indication that our bodies do not tolerate it well.
Plus, the bigger problem nowadays is the source of the milk.. with factor farming (in order to be more profitable) cows are fed hormones (to keep them lactating longer-- because cows, like all other creatures, only produce milk for a certain amount of time after giving birth-- the hormones stretch this time just a teeny bit longer) and antibiotics (because of unsanitary conditions cows, and the people who drank their milk, would be getting staph infections all the time). The extra hormones and antibiotics wind up in the milk.. this contributes to those antibiotic resistant bacteria that keep cropping up and early puberty many kids are experiencing (at age 7 and sometimes younger) with other problems...
Again to each his own, but many scientists agree that if you "have to" drink milk (not nutritionally, but rather as a treat) that explicitly 'hormone, GMO, and antibiotic free' milk is best
Read "The China Diet"-- my doctor used to think being a vegan was unhealthy, until he read it and he immediately became one too... I have never read it, but it must be pretty good...
(and no, my whole family isn't vegan.. though they resently became vegetarians)
...oh, and spinach has the same amount of protein as beef (just thought I would let people know that we are not 'unhealthy'.. and it is not difficult)
But again, to each his own.. do whatever works for you! (I just like people to have the real facts when making decisions/in discussions-- rather than myth, Old Wives Tales, and conjecture)