I think because mass effects entire story from 1-3 was told so well so everyone was disappointed with the poor ending. And I believe destiny HAD ( when they started to develop it) a story not has a story because it clearly has NO story as the lead writer quit before they could finish. I believe this just resulted in them hashing together whatever they had in the quickest order they could find. End result = toilet Lots of people killing enemies for no real reason or understanding.