[longshadow]

The problem with attacking another world is the energy to get there and back essentially negates any gains you may receive from conquering the new world.

Unless chocolate-covered indigenous population lips are considered a very cherished and tasty delicacy.....

[RadioAstronomer]

Unless chocolate-covered indigenous population lips are considered a very cherished and tasty delicacy.....

I think a technologically advanced enough race to have conquered star travel would be able to far easier create artificial lips than to expend the energy to travel light years to get them. :)