Quit lying. You didn't exterminate the cat population for any kind of higher purpose, any more than we went into Iraq because of the existence of weapons of mass destruction.  You're just doing the usual that mentally unstable, violent people do: lie about your need to kill. In this case, you demonize and anthropomorphize cats, attributing dark human motivations to their normal cat behavior, so as to support your thirst for blood. They have as much right to live on this planet as any other animal, including humans, maybe more. 

Youre the perfect example of all I stand against.  Get over yourself.