Why do Japanese eat sushi at funerals?

Eating sushi at Japanese funerals is just a traditional culture of others, just like we often eat big fish and big meat at funerals. Normally, the funeral should be a very sad and sad mood, but at the funeral, I was generous in scrimping and saving, which made me feel very puzzled. What puzzles me even more is that in the traditional culture of our country, when giving birth to a child or getting married, it is all big fish and big meat, which is really a bit incomprehensible. Japan is a country where sushi is a snack they often eat, so at the funeral, they will also eat a little sushi to express their deep thoughts on the deceased.

Japan, a country with a large population and few natural resources, can't do whatever it wants. Sushi is generally made of various plant powders, just like bread we often eat in our daily life. Small islands like Japan can only afford this kind of food, and there are no more food sources. Moreover, sushi is more formal and shows respect for others, so the cultural habit of eating sushi at funerals has gradually formed.