"And that's why you're a failure." Ultron cut off, "That's why I had to do this. All of this, all this destruction, is your fault in the end. If you'd just done it in the beginning, if you'd have given them a quick death like I know you're capable of, then I wouldn't have been forced to come in and deliver the alternative. And sure; it's slower, more painful. But in the end, it gets the same results."