In season 13, production was temporarily suspended because of the show's poor quality. I often felt that the excuse they gave such as change in writers, storytelling was not credible. Knots Landing while still good had been gradually decreasing in quality since season 9, the show had mostly been a hit and miss at this point, a good storyline here and there. By the end of season 12, while to me I was enjoying the show again since DM's departure, you could feel that the show was aging and it seems destined to end. Regardless of changes, by season 13 the show could no longer be creative. I never agreed with the actors/producers who said that the show could have continued on and on and that cancellation was done for budget reasons. Even if there had been a season 15, I think I would have lost interest. While theme based shows like legal, criminal or medical shows could go on and on, primetime soaps could not. With the former, as long as you follow the formula, it's fine, every week, there is a new case, a new crime, a new patient. Daytime soaps have the ability to go on forever because plots tend to move slower, even with the doses of over the topness, the down to earth appeal of daytime soaps, indoor sets and everday appeal makes it easy to tune in for years because the characters and settings become an extension of your everyday life. This was not the case with primetime soaps. By the 1985-1986 season, primetime soaps had reached the maturity level, the following season, Lorimar re-invented their three soaps with a cooler aspect but from then on, everything went downhill. Knots Landing was able to live because of that daytime appeal I explained but by season 13, I don't think there was anything the show could have done to rejuvenate itself.