Do we drink enough?

Humans are the only mammals that drink milk from another species (apart from the saucers of milk we give to our pets! Just putting that in before there's an argument).

^^^^^^^^^^ And we shouldn't really be drinking it after about 5 year old as it is used to nourish us in our formative years. From what I can gather, after that age about 65% of us are lactose intolerant? Thats why I only use cream as it has less lactose!