A sense of purpose is absolutely doable in a game, and any gamer would tell you that. Look at Halo, saving the universe. Look at Zelda, saving Hyrule. These games had lasting impressions on the players in nearly equal magnitude, even though they were different play styles, because they had amazing story and meaning to the characters in it. The story in destiny? Repel the "darkness", which is at least 4 different factions all fighting each other who really don't even care about you unless you happen to interrupt their own battles.. Bleh, not at all what I expected from Bungie