If your belief is that it is not right to drink milk because it was meant for calves, then that is a valid reason not to drink it--good for you.
In my opinion, good milk and it's products can be an invaluable source of Vit's A and D, CLA's, enzymes, etc. I find that most of the studies done on milk are not done on whole raw milk from cows raised on pasture that is grown on rich soils, making the claims that it causes breast cancer, allergies, and so on carry little weight. It is definitely possible to make this kind of milk on a small farm, just as possible as it is to grow vitamin/mineral-rich and e-coli/salmonella-free vegetables. And, in my opinion, if I didn't drink milk because it was meant for baby calves, then should I eat fruits and vegetables since they are the seeds that will provide for reproduction of the plant? Just a thought--it doesn't matter a lot to me whether you drink milk or not.
But I think it is a little wrong to portray the entire dairy industry in the light of the conventional factory farm without mention of the "brighter side". It hurts all of the farms that work so hard to do it right. Instead of enlisting others to boycott dairy, at least see the alternative to obtain clean, raw milk in cowshares, direct from the farm, and in the few states that allow it bottled and in stores.