What kind of foods do you normally eat/buy?
Do you eat out (including fast food and anything that doesn't include the food you buy at the grocery store) often? If yes, would your answer to the first question change if you ate only what you bought at the store?
EDIT: Some people asked, and I guess I should have clarified: This does include toiletries and cleaning supplies. Shampoo, soap, cleaning products, laundry detergent, et cetera.