I love the Ban Plastic answer so I’ll re quote it here:
Because they don’t like experiencing cognitive dissonance. They value a simple life without having to think too much. They have answers (right or wrong) and they’re happy with those answers.
And also link to my many posts on the psychological driver (aka [homeostasis preservation](https://www.quora.com/search?q=homeostasis%20preservation&author=84795924 “www.quora.com”)) for this common human defense.
https://www.quora.com/search?q=homeostasis%20preservation&author=84795924