I am a warlock 90% of the time, and every once and a while i will get a different class of armor like a hunter or a titan piece. and so it means nothing to me and i will get rid of! but if there was a system were you could trade something with a person and or a friend. those thing would not be wasted. for an example: i have a rare titan chest piece and my friend has a mote of light or a rare gauntlet. you get the point. i could give him that chest piece and he could give me something in return for it. there for we have a barter system. and using that people could get something they needed a little faster instead!