Why do some people prefer to drink hot water than cold water?
People live in the north tend to live drinking hot beverages, such as tea or hot coco due to the cold weather in the winter. However, for people who have low tolerance in caffeine, it is better for them to not drink the previously listed beverages. A warm cup of water could help heat up the body, while reduce the intake of caffeine. 

Also, in development areas, cold water source may not be sanitary for people to intake directly. After boiling the water, it kills 99% of germs, and will make it safer for people to drink as well.