Very interesting video, check it out, it may give away the disgusting RnG loot system and why no trading.
http://www.gamespot.com/videos/the-point-destiny-the-hardcore-gamers-slot-machine/2300-6425852/
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THIS VIDEEEEOOOO....IS AAAASSS OOOOOLD AS YOUR MOOOTHER!!!
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This is a tactic that's been used in MMO games and games like Diablo for years and years. I'm not sure why everyone is so surprised destiny is doing it too.