In the United States, better refrigerators usually have the function of making ice, so it is very convenient for families to get ice water. Drinking ice water always feels more refreshing than drinking hot water, and it is convenient, which makes me develop the habit of drinking ice water.
Not only that, eating out of restaurants usually provides ice water, which may give you a "sense of production" of drinks, which is different from the water you can drink everywhere outside.
Oh, by the way, the water at room temperature in the United States is usually straight drinking water, which can be drunk directly without boiling, and no one deliberately engages in barbecue. Rarely boil water, usually make hot tea or coffee. So I seldom drink warm water. If we go to a restaurant and order a cup of warm water, I'm afraid it's a bit difficult for people. I'm afraid some restaurants don't have pots for boiling water
Apart from water, I usually think that drinks are either hot coffee or iced.
But in other drinks, there is a similar feature that can give you some reference. That is, most American drinks contain sugar, which is very sweet to me. I can't drink these drinks without ice, which means that for sugary drinks, they really taste better after ice.
Everyone has the experience of eating watermelon in summer. People who pay attention to it will tell you that it must be chilled before it tastes better.
It is understood that there may be two reasons. The first is that fructose is really sweeter after ice. At the same time, when we drink sweet drinks, we also find that the acidity is not so obvious, and we will not feel sour in our mouth after drinking.
On the other hand, it is said that human taste buds are more sensitive to sweetness at low temperature, which may also be one of the reasons. Therefore, the coolness of iced coke is better than that of normal temperature coke.