Honestly I can't tell you how many times I've been killed by exotic weapons and op legendary weapons. Its an unfair advantage to the players who have these and a clear disadvantage to those players who do not have an exotic weapon or an op legendary weapon.
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Xur sells both 3 if coins and exotic weapons and gear for strange coins, those ain't hard to come by like y1. Also nightfall can still drop exotics, PoE drops exotics, as for legendary guns you got vendors, engrams, strikes, pvp, raids. Just because you can't bet a certain gun but get killed by it doesn't make it op. Also don't ask us to hold your hand, bungie ain't your mommy.