In principle universe has no laws aside from those that govern its inner workings. There is no room for good and evil, those laws are not included in theory of everything. An asteroid destroying a planet is not evil even if it wipes out an entire species. A parasitic lifeform cannot be judged as evil on a sole ground that it exists, in many cases it did not have a say in a matter (in some it did and that may be a different story but it is still irrelevant to the universe at large). The only thing you could argue is that order is in a way favoured over chaos. Why? Without order (on cellular level) a complex environment or organism would not, could not exist. But is that written into the law of the universe or is everything just a luck of a dice roll. Putting religion and creator theories aside (and I do not mean to offend believers with this statement) it really boils down to laws of physics. If you can exert greater force then you prevail. I do not understand why there is a need to seek greater justification for our actions, especially in a video game (though this fact should not diminish a quality of the conversation). We exist, we fight for survival, for better or worse, we commit atrocities (check out your kill count) we argue in truly despicable ways (check out forums or chats) but just like everything else created, we have a right to exist and we have a right to forge our destiny, especially if we have the greater force. We can do so in an ethical way or any other way we so desire, but for the universe it makes no difference what so ever… the only difference is how you feel about it in the end. Re: Vex… Would enslavement of mankind be in any way more ethical than a quick death of a species?