Lisa Bramen wonders why certain countries don't put frozen water in drinks:
One explanation I’ve heard elsewhere, and which may hold some truth, is that Europeans see ice as taking up valuable real estate in the glass, so that they would feel cheated if they got too much ice and too little beverage. This theory has two problems: It doesn’t explain, again, why water shouldn’t be served with ice, and it doesn’t take into account the fact that one is often served a whole can or bottle of soda, which could then be used to refill the glass.
The Dish 