> Well despite being everywhere they at least seem to be mostly inert and don't really cause much issues as far as I'm aware? A good bunch of them are known ca

> Well despite being everywhere they at least seem to be mostly inert and don't really cause much issues as far as I'm aware? A good bunch of them are known carcinogens (vinyl chloride), but generally, I'm on the same page as you: I'm not aware of any effects; no one does, and that's a problem - it's a species-wide natural experiment that has also extended to our food supply. If it turns out to be deleterious, we'd be fucked.