For a child to wanna make the world burn, their life must have been a living hell of constant abuse.
Yeah. After I read a story of a Serial Killer (heckle he told it very detailed), I'm so can't deny that anyone who had a long time of suffering can had that kind of view. Seeing a great disgust on humanity and perhaps himself.
Nah, you just need to be a nitpicker with a warped sense of justice. Lots of people put up with abuse on a daily basis and they don't become genocidal maniacs. The amount of abuse has nothing to do with anything.
I don't think you hadn't searching for real stories of why some people turn into that.
Sometimes people become monsters themselves, because of the people who causing harm to them in the very first place.