I feel like their numbers included the people that have one toon at level 4 that never play. Yeah.. those guys NEVER use weapon parts!! There is absolutely no reason to hinder the upgrade/infusion process in my opinion, I can't think of any valid reason at all. Are they really that interested in making us choose between which weapons we want to upgrade at any given time? Make weapon parts rare like they are now, and force us to have guns that we can't upgrade sitting useless in our vault and inventory? I'm sorry, but that is fkn retarded Bungie.