While I love carbonated beverages, I lost my taste for sweetened soda long ago, and, up until recently, was drinking carbonated water with citrus flavoring but no added sweeteners.
Well, carbonated beverages stopped agreeing with me -- or more precisely, my gastric system -- and now I drink mainly plain water. It's not particularly interesting, but it's likely very good for me, and after a while, you just get used to its plain-ness.
But it must be tooth-crackingly cold!
Coffee, surprisingly, does not cause any problems for me. So I'm still an addictedavid coffee drinker.