[mr_toad]

> Food using molecules certified never to have been part of any known living organism.

Over the aeons they have almost certainly been part of some living creature. There’s only a finite supply. And humans have come to monopolise it. We should worry less about killing individual creatures and worry a lot more about wiping out entire species.

[coldtea]

>Over the aeons they have almost certainly been part of some living creature.

There are neither enough aeons (10-20 billion years of universe), nor enough living creatures for that.

>There’s only a finite supply*

Finite supply doesn't mean all possible permutations have happenned. It's also not like an infinitely old universe (and even one like that wouldn't necessarily have permutations of molecule arrangements where thats statement is true).

[Terr_]

> Over the aeons they have almost certainly been part of some living creature.

That contains a very-unproven assumption that other biological life was present prior to the ignition of our Sun and formation of the solar system... Or that there are "living creatures" in solar plasma.