I gave up all fizzy / soft drinks about 15 years ago for health reasons (I didn't drink it much in the first place, but it started to feel like my guts were being melted through like a scene out of Alien when I drank sugary soft drinks). On the rare occasion I try a bit of normal coke these days, mainly out of curiosity, I have to wonder why the hell people drink that stuff.
I also found it quite funny when someone near the start of this thread said that Diet Coke tastes "unnatural"... yeah, like coke tastes natural.