I don't understand how drinking flavorlessness can be so unpleasant, but creature comforts have never been important to me.
I find Mio works pretty well, though, when I want something flavored. Otherwise I drink almost nothing but coffee (now decaf) and water.
Because Water isn't flavorless. People just consider it flavorless because of how they define things.
In fact water tastes bad... officially.
All water taste differently,
some water is very expensive, some water isn't,
Distilled water is rather flavorless, but that water isn't meant to be drank,
Drinking water is distilled water with things added back into it, which control how it tastes.
so some water will taste good, some water tastes bad, but it all tastes like water.
Tap water is the worst, you should never drink the tap water somewhere you don't live, but even then you shouldn't drink your own tap water either.
and by drinking the tap somewhere you don't live, I mean, if you go to another state, or another country, don't drink their tap, but it's somewhat ok to drink the tap from your state if you've lived there for a while, because your body is somewhat used to that water. But tap water can make you really sick if you aren't used to your areas tap.
(drinking distilled water isn't really *bad* for you, but if it's all you drink, you can die from it)