This document discusses why humans enjoy sweet tastes and foods. It begins by exploring the historical view that sweet foods were the most nutritious. It then examines evidence that infants and children naturally prefer sweet tastes over bitter tastes. Research shows that adults tend to crave energy-dense foods with fat, sugar, or salt. While liquids are less satiating than solid foods, diet beverages do not increase hunger or calorie intake compared to their sugary counterparts. Studies find that low-calorie sweetener users tend to have better overall diet quality with lower sugar and carbohydrate intake.