Tree worship, perhaps a distortion of the tradition of the tree of life and the tree of knowledge (Genesis 3), may be traced in Egypt, Arabia, Syria, Assyria, Persia, India, Thibet, Siam, China, Japan, Ceylon, the Philippine isles. The Druids venerated oak groves (Pliny, H. N., xvi. 44; Tacitus, Annals xiv. 30).
It does contain more calories than regular milk, mostly because of the chocolate content. A good compromise is to make your own chocolate milk by mixing in chocolate syrup or cocoa to skim milk. This way, you'll get maximum health benefits while still enjoying the flavor of chocolate milk.
Soy milk is made from a blend of oil, water and soybeans. Though it contains no dairy, it usually has approximately the same amount of protein, fat and carbohydrates as cow's milk. And if you want to forego the supermarket brands and make it yourself, it's possible with a machine like this.