Why can't the kitchen be placed in the middle of the whole room? What is the scientific basis?

At the moment when the decoration style is arbitrary, many people may ask: Why haven't you seen the kitchen in the middle of the room? Is there any feng shui theory or something? In fact, I have never done this before. From the Three Emperors to the Five Emperors to the common people, the kitchen will not be placed in the middle of the room. The ancients usually set up a stove in the yard outside the house, or built another cooking house far away from the study and bedroom. In modern architecture, the kitchen will be divided and combined into a small room.

In the middle of the room is the living room.

What's that in the middle of the room? That leads directly to the living room. If the kitchen is placed in the middle, it will not look good visually, giving others the impression that the living room will be very narrow and small. Besides, how can guests pass by the kitchen when others come from home? The kitchen is used for daily cooking, even if it is tidied up, the pots and pans are not beautiful. It is impolite for guests to see the kitchen at first sight here.

For daily life

Why can't the kitchen be in the middle of the room? The kitchen is connected to the natural gas pipeline. Why do all buildings choose to keep the kitchen away from the bedroom, or at least separate the kitchen with a wall? What I'm afraid of is natural gas leakage, which will cause some unnecessary losses.

The kitchen is used for cooking, and it is surrounded by oil smoke every day. If the kitchen is placed in the middle of the room, you are not allowed to smoke all over the room. The reason why the kitchen is close to the balcony is to facilitate ventilation. Otherwise, a month later, the walls of the living room and bedroom will be covered with sticky grease.

Put the kitchen in the middle of the room. What are the front, back, left and right sides of the kitchen? Is it convenient to get in and out of the bathroom, living room and bedroom? Obviously it won't be convenient, and this design style, to be honest? It's really embarrassing. Isn't buying a house to increase the mood of life? If life becomes very troublesome because of the renovation of the kitchen, what's the point?