I'm not sure if this is a statistics or a philosophical (or third category) question: given you are the one making that statement, is it still true? I.e. statistically over a population it may be true that I could look at you and make that claim, but based on your own feelings, is it possible for you to know "I will never abuse or murder my children"?
That's kind of just a random food-for-thought that your wording put into my head, but I guess it leads onto a more interesting question - do sexually-abusing parents (and extend that to other sexual abusers, or indeed other criminals) see it coming from the start, and therefore are always at a state of either "I must try to resist" or "I must wait for a good time"? For example, fathers who raped 10 year old daughters, how many of them were waiting ten years for it, how many didn't think about it until shortly before? No idea if there's any answers to this question though.
