Why do you subject things to good and evil? You automatically assume that worms and nasty things akin with evil. None of the enemy types are evil. If they are evil so are we. They ALL want to expand and build upon their civilization. The hive cabal fallen and vex are all independent civilizations and like any civilization they wish to push out and survive longer. Just because they came to earth and ravaged everything doesn't mean they are EVIL, it's just like America taking over foreign lands. America started out as a bunch of colonies now it's a whole 50 states and a few territories. Do we call ourselves evil!? NO because we feel like we are the good guys for taking land and waging wars for it. Same thing for the fallen give cabal and vex they don't feel like they are evil they are simply trying to survive. If they all were truly evil then they wouldn't be fighting each other. We are just as bad as them. Yes I know we were created to defend our homeland and the traveler came and "helped us" but the traveler must've done something to be running away the whole time. If you think about it real hard... The traveler could've tried to do the same to all the other civilizations out there and they realized that they were being controlled by this thing so they rebelled and came to hate it because it tries to consume them. Luckily the traveler found us. On the brink of desperation it came and "saved" us. In turn we became slaves to its powers and now it is using us to right it's wrongs. WE KILLED HIVE GODS?!? We are destroying THEIR own FAITH. How is that not evil of us??? We follow this traveler mindlessly just because of this thought in our heads that we owe it something. The traveler will consume us all and once we rid of his enemies he will exact his plot and with us user his control nothing will stop him. Don't try to be so assuming of things just because they look a certain way. A rose looks beautiful until you prick your finger with a hidden thorn.