The Originals was always a superior show to The Vampire Diaries. But it completely missed the mark with its series finale. It teased a relationship for Klaus and Caroline but ripped it from them when Klaus and Elijah killed themselves to save Hope's life. Side note: Caroline's previous love, Stefan Salvatore also sacrificed himself. Despite the uproar over the conclusion, the franchise continued with Legacies, a show that focuses on the daughter of Klaus.
The Hills may be back, but it still concluded once with a genuinely awful finale. Kristin was complaining that Brody didn't like her, so she was hot-footing it out of WeHo. The final scene pulled back to show the Hollywood sign was fake, seemingly confirming the series was fake.
This HBO hit concluded by fading to black just when it seemed like something dire was about to happen to James Gandolfini's alter ego. It was a slap in the face.
Weeds went on for about four seasons too long. The finale itself took to the future to reveal dull and unsatisfactory conclusions for the beloved characters. Way to ruin a good TV show.
Angel was darker and more addictive than Buffy the Vampire Slayer, but it completely dropped the ball with its series finale. What was supposed to lead into the sixth season, became the last-ever installment, and fans didn't even get to witness the final battle.
The Good Wife
Diane slapped Alicia! Alicia became unlikeable! It was silly, nonsensical, and mostly set-up for the far superior spin-off which does not include Julianna Margulies.