People have deeply held ideas about food. It's often directly tied to their personal ethnic or religious identity. Notice how many holidays and traditions have

People have deeply held ideas about food. It's often directly tied to their personal ethnic or religious identity. Notice how many holidays and traditions have special foods, and how much effort often goes into it. Here in the US there are people who would genuinely shoot you if you tried to get rid of Thanksgiving turkey. I don't see that changing in the next 100 years or so.