To coin a term, resurrection can be a killer. Death is the easiest source of dramatic tension in all narratives, either as a threat to generate excitement or a more philosophical exercise to meditate on the finite human condition. Returning from the dead is often a non-starter in storytelling for obvious reasons. Horror stories thrive on the cost of trying, while other genres need to mind their P's and Q's lest they reduce the concept of resurrection to a gimmick. Engage in the practice too often, and the concept is trivialized: death loses its meaning and therefore its purpose as a dramatic device. Nevertheless, ongoing narratives often turn to the concept of resurrection more than once.
Source：https://www.cbr.com/star-trek-character-deaths-resurrections/
