Comment by goda90

> In a perfect world, we could send all traffic completely unencrypted and never scan for a malicious payload, saving all that energy and hardware.

In a world with such social cohesion, we'd be defeated by an alien species being able to quickly interpret and exploit our technology like in the hit film Independence Day(note, we're the defeating alien species in this example). https://www.youtube.com/watch?v=9DIjBGierkA