I go through a gallon of 1% milk a week, partly because I make yogurt every six days and need to feed my milk-based sourdough every two weeks or so at least, since that is how often I bake crackers, and I also use it in other baking. I also drink milk with dessert and use it in making my morning oatmeal.
My husband cannot drink regular milk. Recently, we bought him some lactose-free milk, and he is delighted to be able to have milk with cake or pie again; he just wishes that it came as 1%; only nonfat or 2% are available in our area.