Not completely true. Nrhymotep (sp) activity saught out humans to corrupt, use, and destroy. Depends on which Old One/Outer Gods you are talking about. Some actively sought to destroy everything. For D&D 3.5ed (4th doesnt exist) horrors are closer to Obyriths (true first rulers of the Abyss). Primordial beings so old and ancient that everything else is but utter tools to be played with. For Pathfinder they are now called Qlippoth, but serve the same basic function. Morals they hate, along with everything else, because moral souls make more demons. When all the souls are destroyed, no more demons (or much of anything else), and then the abyss will be theirs again. Granted, all realities will burn when this happens. Which, in scope of evil, are similar to the horrors. Can't remember which kind of outsider fed on fear and pain, but know some did.