The whales died in agony before, as did the birds, and those delicate insect bodies are crushed, eaten, and dashed as quickly as they're made.

Nature's a beautiful edifice built on the back of hundreds of millions of years of suffering. You could make the argument the most moral thing to do, if you care about the well-being elephants and the turtles and the chickens, is to re-organize it as quickly as is practical and wise.