I agree with you. Trading in games can easily kill a game. I also might've been responsible for ruining my friends experience in Borderlands 2 by giving them Legendary weapons. Being given Legendary guns gives you no sense of attachment to said weapon. You'll throw it out like trash because you didn't earn it. I don't know why earning weapons makes me enjoy it more. I just say, "I went through Hell to get this and I plan on using it for a long time." This is what Bungie wants people to experience. And I'm 100% behind this.