Afraid to commit (fictional) murder
In an interesting trend media throughout its existence seems to be afraid to kill off characters, especially important ones. From "Superman" to "Sherlock Holmes" key characters die, only to return due to some thought-up Deus Ex Machina in order to both have a sad catharsis followed by triumphant victory. But is it a true victory when the loss of death is negated? In a world where characters cannot die (IE, Digimon or Pokémon), versus one where characters do meet their permanent untimely end (Game of Thrones) what difference (in message or otherwise) does the audience experience as a result and what is the overall effect each technique causes for understanding of the stories?