Some people die of natural causes; others have an accidental death. I’ve even heard tell of people dying of a broken heart. What I will eventually die of I cannot be sure, but I can assure you that I will not suffer death by futility.
Death by futility comes whenever life purpose is not clearly defined. Death by futility comes when obstacles, be they internal or external to oneself, are used as excuses for failure or worse, for not even trying. Death by futility comes whenever the desire for comfort supplants the will to maintain integrity in the face of any discomfort.