Should a protagonist die?
It's a question many authors struggle with. Personally, I think it's an important part of activating the reality wheel in a narrative. It can honestly be annoying when a hero overcomes every outrageous obstacle or battle unscathed, eliminating fear that the character might actually not survive a horrendous encounter. Killing heroes creates an atmosphere of uncertainty. Can they defeat that monster? Is this quest too much for them? Will the dragon eat their face off?!? It's one of the reasons I've stayed away from the traditional 'stop the apocalypse' or 'save the princess' story arc. I find the domino effect style a lot of fun when writing. Events triggered by the protagonists actions give the narrative a much better flow than a story trying to wrap everything up nicely with a bow to accomplish its preconceived end goal. Sometimes there's nothing worse than predicting a story's ending!