Some people don't like Murmer. And did you think of how many spaces exotic weapon collecting takes? Or regular legendary weapons? Special weapons such as the Supremacy that you cannot get now, or likely forever since they removed the Queen missions? Or those who just like the collect the Strike weapons, because they look a -blam!-ton cooler than the normal Legendaries you can get. AS for armor. There are hunter cloaks I store in my bank, because my main hunter has his class items nearly full(One or two spaces to allow for strike cloak duplicates) Some are from before the Dark Below, others are from after. Things like the Queens cloak you cant get anymore, to the old Crucible AOS Cryptid cloak, things like that. Same goes for my Warlock. And finally, special items. Ships. Ammo packs. Materials. Vanguard and Crucible commendations. Energy and Shards, the list goes on and on. You can fill that particular spot of your bank in an instant.