But if you hadn't killed the enemy you wouldn't have gotten it. Therefore you did earn it in a way (not a challenging way but a way nonetheless) I guess it's rewarded rather than earned. I got given mine after a pretty tough Nightfall mission, my friend after his epic 4.7KD to win us the game in crucible. Do I feel like I've earned it? Yes but that's cause I've played 700+ hours. Do I think less of people who bought one? Nope. If I'm trying to kill a raid boss I'd rather have a Gjallarhorned up team mate with an empty wallet than no Gjallarhorn at all