Cost as well; water is dirt cheap (for now anyway, there's potable water shortages in plenty of places and that will become a worldwide issue soon enough), anything alcoholic has become more and more expensive for various reasons, including but not limited to taxes + extra "discouragement" taxes, at least where I live. Drinking is an expensive hobby, to the point where weed is cheaper and has less side effects if the purpose is to alter your state of mind a bit.