Kirk gestured downward with a finger, "Killing them brings them to justice. It makes sure that they never hurt another person with that very ship you're determined to save. But she'll try to save them."

His eyes were narrowed, serious, determined. He saw no reason for leaving them alive. He believed in the worth of life, but what good would keeping them alive do? Leave them a chance to hurt more people? Get revenge on Earth, Starfleet, or someone else? Would Nero ever stop hunting him, his ship, or Spock? What about New Vulcan?