Many years ago I developed a weird food intolerance called Fructose Malabsorption. Basically, free fructose molecules mess me up, but sucrose (table sugar) doesn't, so among other things I started avoiding things with much HFCS in them. I started getting unsweetened iced tea at restaurants and adding sugar. I was absolutely disgusted by how much sugar you have to add to make it as sweet as a soda or sweet tea. In a regular sized drink cup (american medium), I add three packets, and that is very slightly sweet. To make it as sweet as "normal" I'd easily have to add three times that.