It used to be that picking up a carton of milk was very simple. There was only one "kind": dairy milk. Now, the cow must make room for the almond, bean, grain, seed, and even the goat.
Whether it is lactose intolerance, milk allergies, veganism, taste or health reasons, people are switching to non-dairy forms of milk. The most common reason I have heard for giving up the cow are the potential health benefits.