For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
Yeah, I stay away from the nonstick stuff as well, for the same reason. Just thought that thinking of seasoning as a nonstick coating target than as something to be cleaned off might be helpful, though I totally get it if not.