Speaking only for myself, when I call someone a "bad" person (I am wary of calling anyone "bad," but that is the language used in this conversation), I mean that they treat others poorly. They may contribute immensely to the world (as Steve Jobs did), but that is orthogonal to whether they are a good or bad person.

I know others have a different calculus, and I am not trying to convince anyone. Still, being a bad parent, especially after you have asked to reconcile, is... well... a person I would be hesitant to associate with regardless of how much I loved my iPhone 2G, or how cool the Lisa looked in the early 1980s.