> Last time I looked at data about this, it appeared that even a poor father who was present was better than no having a father in the home. If I remember right it was measuring the likeliness of a teenager to end up in prison. If there was a segment of fathers that were worse than not having a father, I don't think it shows up in any study I've seen.

I think their point is that those bad fathers don't show up, because they don't care about their children.