I would say that very few, if any, foods are truly indispensable. That's a good thing too considering all the allergies and negative reactions people have to common foods. Lactose intolerance is exceedingly common (this blog post says 50% of Americans have it...which shocks me as an American!), but those who have it don't need to feel like they "need" milk. There are plenty of other good sources of the same nutrients, including calcium, that milk has.

I had found a great product! Soy Milk.Only, 6 carbs. per 8 oz. glass.Lastose free.