I have no idea why this is still a thing other than to waste players time.
It's not even like Exotics get a bigger stat boost from masterworked or even additional effects or energy. Lower the cost or make it worth the cost please.
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Know what I hardly even noticed I was was spending 3 ascendant shards everytime, untill I got rain of fire the other day I’m down to my last 5 shards. And I see it was 3 to masterwork!! So I left it at energy 9