There's a difference between what you used because you wanted to and what you used because it's viable. Why would you use Hezen's Vengeance over Hunger of Crota? Why would you use Devil You Know over Fatebringer? Why would you use Astral Horizon over Found Verdict? Statistically, those were poor decisions. (PvE) That may not matter to you, but I think you'd find that a whole lot of people would agree with me.