Often I find myself using certain guns just to max them out not because I will use them but because it is satisfying to see that slight Golden outline on the gun. Like even guns I only use in the crucible where those final 3 upgrades are useless, I find myself upgrading them because seeing a green bar below my guns annoys me. Edit 1: Black Hammer is the Bane of my Days because Bungie removed hive disruptor perk and it does not appear as maxed Edit 2: wow guys we're trending! seems likes I am not the only one who gets annoyed by this.