In a show I watch one of the most touching episodes is the episode of the starwhale. It is about a hard decision...
A starwhale once came to earth to save as many people as it could from a dying planet. It got captured by the human beings to push their journey on to find a new planet. It endures constant pain through electric shocks to push the vessel forward.
The choice is... Set it free and let everyone aboard die or keep it captive. In the clip the doctor wants to turn the starwhale into a vegetable. It would render the alien unable to feel pain tough still carry the people throughout space on their journey.
In the end... It is set free. It is set free from the torture and the agony. It does not leave the people behind or let everyone die. It continues the journey. It came to earth because of the crying children. It stayed because of the crying children. It never needed to be tortured or tamed. It just wanted to mend the hearts of the broken young.