The Fallen yearn to wipe us out. They believe we stole their Traveler. The Battle of Six Fronts and Battle of Twilight Gap are both proof of their throat for our destruction. The Vex see us as merely an annoyance. They wish to become masters of the universe by writing themselves into reality. The Light and the Dark are the only things standing in their way. The Cabal want to turn our little corner of the galaxy into part of their empire it seems. There is some master plan that they're hiding and preparing for. Morale, however is very low. They're also massive dicks