Kitchen cabinets are a mainstay of most homes, but why is there so much empty space above them? The answer is simple: it's all about function and efficiency. The extra space between the top of the cabinets and the ceiling allows for efficient storage, such as for rarely-used items or those that don't fit in the cabinets. It also provides easier access to items stored up high, such as spices or baking ingredients. Additionally, the space adds extra height to the room, making it feel more open and airy. All in all, the space above kitchen cabinets is an essential part of any kitchen.