Why do other cyber security professionals treat pentesting like the dark arts?

I've been working as a penetration tester for some years now after doing security engineering/app sec for a few years before that. I've worked with incident responders, engineers, GRC folks, really the full security org at some point. The amount differs depending on the group, but pretty much every other security group we present to always has this air of "wow what you guys do is just incredible". Why do people think this is? Pentesting isn't some crazy hard skill. …

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