You mean...like they're doing with the Cluster? Exactly what they're doing? Organic life isn't important to them. Yellow Diamond says "organic life" like it disgusts her, when Peridot brings up that the Earth as resources that could be used Yellow Diamond says 'I don't care. I want my cluster, I want that planet destroyed". Yes, part of that is because of Pink Diamond but she doesn't even consider Peridot's proposal. Message Received seems like a pretty good argument against any idea Earth is special.