People prefer to ignore scientific reality in favor of politically correct myths. Specifically, we incorrectly interpret (positive) statements that describe the world as it is to be (normative) statements that prescribe the world as it ought to be. This confusion impedes scientific progress.
Homeless people who are fed at soup kitchens typically don't get to choose their menus. But in Bologna, Italy some protested when a celebrity chef offered them vegan cuisine. Some said they'd rather return to the streets than eat his veggies.