Look up psychopaths too, you are showing the criteria for these individuals more so then the typical run of the mill narcissist. They typically find narcissists useful, and they realize that the best way to get a narcissist is to flatter them and often the most pleasure comes from finally discarding a narcissist, while they are cunning and smart their weakness is flattery and psychopaths rather especially enjoy playing with them but especially enjoy breaking them and tossing them too. Also, psychopaths tend to find other human beings repulsive and disposable as you have described how you felt when you were younger.