I usually see it in friends who are vegetarian or who eat “organic” foods.
One acquaintance has a bizarre obsession with knowing every last detail about where her coffee was grown, how it was transported, who roasted it, and how it was served to her.
I don’t go out to coffee with her anymore. (-:
I enjoy pointing out to these people that coal, gasoline, and yes, even Styrofoam coffee cups are all organic.
I’ve known people like that too. It’s difficult to go out to restaurants with them.