Originally Posted by Laurent Quinn Proper

Those who kill another human are those whom are unfit in some way or another. Whether it be psychically, psychologically, or morally and so they hardly represent every one of us. These people wouldn't govern a civilization with the sufficient power brain to develop space crafts and telecommunication devices that could travel the light-years warrant to cause bodily harm to another civilization.

The resources needed to travel and then destroy a civilization are far too vast and irreplaceable for someone looking to "kill annoyances".