Dave, I think you'd be hard pressed to find a mother who believes her child capable of murder, even in the face of overwhelming evidence. Most parents are so ecstatic to have their children's attention at all, that they likely welcome engaging them in activities that they usually wouldn't. I hear what you're saying, but people can't even raise pets without completely screwing them up. Sadly, it's a tall order to expect people to do what is right for their children. They never seem to realize their mistakes until it is way too late. As you already mentioned, the Lanza's are a perfect example.