Somehow, I remember it being advertised as a "true crime". I don't think it quite fits that category, although it does involve crime, that's not the overall emphasis of the book. I think that the overall emphasis is overcoming unlivable and unbelievable circumstances and building a positive reality anyway.
Everything that the narrator does that's horrible and unforgivable is done as a child, and is thus, actually FORGIVABLE. What actually miserable life that all those children had growing up, and what a DESPICABLE father! And David is understandable with understandable mixed feelings and guilts. The whole thing just makes me so sad :-(.