From the movie Star Trek V: The Final Frontier, Captain Kirk and his crew must deal with Mr. Spock’s long-lost half-brother who has an obsessive search for God and takes away others pain.
Kirk: Damn it, Bones, you’re a doctor. You know that pain and guilt can’t be taken away with a wave of a magic wand. They’re the things we carry with us, the things that make us who we are. If we lose them, we lose ourselves. I don’t want my pain taken away! I need my pain!
The Youtube clip.