Breast milk is the ultimate food.

Breast Milk is a perfect food for almost everyone. Although it might seem extremely strange to see a grown up person breast feeding, there are many facts you might find interesting about it.

Breast milk is actually the only food everyone can it for the rest of their lives without encountering any problems. We see dogs being perfectly happy with one type of food every day, but this is not the case with humans. Except if you are talking about breast milk.
Ultimately, this is why real breast milk is very expensive. You can buy breast milk online for about 4$ per ounce, over 200 times the price of crude oil.
This, however is not unjustified, since producing breast milk is tiring. For producing breast milk enough to feed one baby per day, a woman consumes as much energy as running seven miles!