(Are you okay with the vast amount of suffering in nature?)

I think the reasonable solution is to redesign nature in a way which eliminates wild-life suffering. For example, we can make all animals herbivores. Or create mindless prey animals (I don’t think p-zombies make sense but “animals” that have some simple algorithm instead of a mind can work). Or make it so that the mind of an animal caught by a predator is immediately removed from its body and re-instantiated in a new one.