Have you ever thought that Cliff would have been completely lost without the Ewings, particularly JR, in his life? Cliff's life was entirely centered around JR and the Ewing family in general too, but primarily JR. It was a sick obsession that went far beyond trying to "avenge Digger." Even Digger didn't want Cliff to try to ruin the Ewings but Cliff ignored Digger's input and went right ahead with his plan to "see them down and out." How many times when Cliff is in situations that have nothing to do with business does Cliff talk about JR? I wouldn't want to try to count them all, but I'd estimate more than three quarters of all of his conversations included mentioning some member of the Ewing family. He seemed to think about the Ewings, and especially JR, from the time he woke up until the time he went to bed. He even tried to marry Sue Ellen! I don't know what Cliff had going on in his life that didn't involve the Ewings. Even the women he saw were all tied together with JR in some way or another. The Ewings seemed to be Cliff's only reason for existing.