It's just how much you are used to it/individual preferences. Same thing as with any other taste, e.g. spicy food.
To me, sugar drinks feel displeasing. Aspartame doesn't taste like sugar, but it's sweet and that's fine. Most of the taste is the sour one from CO2, citric acid and phosphoric acid anyway.
To me, sugar drinks feel displeasing. Aspartame doesn't taste like sugar, but it's sweet and that's fine. Most of the taste is the sour one from CO2, citric acid and phosphoric acid anyway.