Throughout history most people whatever country they live in have based their diet on a small number of starchy vegetables or grains. So in pre-Columbian America corn was the staple and in South America it was corn in some places and quinoa or potatoes in others. In Europe the staples were barley and oats with buckwheat in Central Europe. In the East of course rice is the major food.
In the last 100 years however, there has been a huge increase in the eating of meat, from the situation where it was rare or unusual to the present moment where it is almost the staple and central food. This has not happened by chance or by science, in fact science would have us all follow a plant based diet so this drive is psychological. It is deeper than a fad or fashion but it surely is an unconscious and abnormal drive.
This video covers and discusses this drive to eat meat and explores it’s motives. I found it both educative and challenging and I recommend you set aside the time and dig in. A segment of the video is very challenging but the speaker signposts it carefully and you can avoid it if needed ( I did!)