> Nobody buys coca plants/leaves and nobody buys opium poppies. They but Heroin. They > buy coke.
Maybe in the US/UK/Aus, but in places like Bolivia, coca leaf products are common, and you can definitely get unrefined opium gum in India although it's illegal.
> There is nothing natural about it. It takes a lot of work and chemicals.
It's still natural - the processes involve isolating and refining a natural compound from the plant. Unless you want to go saying white sugar, white flour, etc are also unnatural.