Board Thread:Questions and Answers Forum/@comment-5.64.232.31-20140924055211/@comment-4303374-20140924230622

Initially, Bungie | didn't want players to trade, but it seems there are rumors around that says we will soon be able to.

Really, trading is only needed for two things: interaction (and not even that much, they could fix interaction by adding in-game chat in the Tower, Story/Patrol, or Crucible) and to have something to do with the items you get that aren't for your class. However, if that's fixed (random loot), then there will really be no need for training, and you can truly tell your friends that you earned it like a badass, and like Bungie wanted.