Spent a year in China and got used to it (they only serve hot water there in restaurants and such, tap water is not drinkable).
It feels good, it tastes good as well (not many people believe me when I say that), if your tap water tastes shitty it makes it good, if it's cold it warms you up, can even help your digestion :]
In the end, it's kind of like tea, but with a different flavor.