If the people you polled were asian americans, 9 out of 10 of them on average would be lactose intolerant.
>An investigation into dietary habits of more than 100,000 people found those who drank more milk were no less likely to break a bone. Among women, higher milk consumption was actually linked to an increased risk of hip fractures. People who drank more than three glasses of milk were more likely to die over the course of the study. The effect was most pronounced among women, who were nearly twice as likely to die, with heart disease the condition with the strongest links to higher milk consumption.
Some milks might be worse than others: http://www.amazon.com/Devil-Milk-Illness-Health-Politics/dp/1603581022
There's nothing particularly super-nutritious about milk that you wouldn't find in your basic meat and veggies. There's no such thing as a milk deficiency.