"Oh, but they do compare, my exo friend." You can hear the amusement creeping into his voice. "Firstly, the fallen. Bloody, ruthless pirates. Amazing engineers. The only ones brave enough to attack the city: and they would've succeeded if the Queen hadn't stopped the wolves from joining. "Secondly, the vex. They are infinite. Seriously, you don't need me to explain how dangerous they are, do you?" He pauses, as if remembering something from long ago. "They existed long before humanity... only their own mysterious algorithms stop them from attacking. "Next, the hive. I trust one as ancient as you has gone down their endless tunnels and caves? Maybe in your old age you've forgotten the horrors you must've witnessed down there." The laughter has faded from his voice now. "The cabal... a large amount of evidence now suggests they are but a splinter group of the real army, a mere drop in the ocean of their system-spanning empire. "And last but not least: the taken. I'm sure you've fought them? Then you'll know that they are the worst aspects of all the previous races made flesh, completely bent to a merciless god's will." His voice has turned sorrowful. "There is nothing we can do... let go of your blinding hope. Does not intelligence come with old age? As does responsibilty. "Is this really a world you'd let your children grow up in?"