My boss is big time into health and organic shit. He eats fruits and berries, drinks goji juice, but some of the stuff he knows is pretty interesting. We had a debate about this too. I told him my doctor tells me to drink me, so this mcdonalds parfait is healthy lol. I was joking but then it led into a debate. He said all dairy product is unhealthy. I asked him why and then he asked me what animals in nature still drink milk from their mothers after their growth spur, and I couldn't think of any.
He said something like just look at nature and no animals have dairy long after birth. So he kinda swayed my opinion on milk.