Harry drops the Resurrection Stone because he no longer seeks (or needs) a way to reverse death for himself or anyone else, and he wants to face Voldemort with his own courage rather than rely on a trick to cheat death. Context and reasoning:
- The Stone is a tool for briefly reuniting with the dead, not for actual immortality. Harry uses it to gain emotional support from his loved ones in a moment of dire danger, then consciously lets it go. This reflects his understanding that true courage comes from within and that relying on the Stone would be misusing it. He accepts the reality that death is encountered by everyone, and his decision to drop the Stone underscores a selfless commitment to facing death rather than clinging to the possibility of resurrecting others.
