Nature's just what it needs to be already. All humans do is hurt everyone and waste parts of them when they kill them. Just because they don't understand how much suffering they're causing that doesn't make it okay. Humans aren't needed for anything.

[He'll ignore the breeding thing for now, since it's less important. Besides, all it'll take is Dist turning his back while the Magikarp is with a Water 1 or a Dragon group Pokémon. Or better yet a Ditto.]