Superheroes that are like “if we kill them we’re just as bad as they are uwu” ? Micro dick energy
The only exception is Aang, whose whole “I’m not gonna kill him if i can find another way” thing is less false moral equivalency and more “I’m twelve and I have been through way too much bullshit this year to add ‘commit my first murder’ to the list.”
Also it was literally against his religion and his entire culture and he is the only one left that follows it, and the only one that can pass it on.