NathanFuturama
Some cartoon shows are much too precious to have a bad ending. However, Futurama bid farewell to its fans back in 2013. The finale episode showed Fry and Leela’s wedding where the marriage took place in a world where there was no time. It is not that disappointing but then the producers could have done a better job nonetheless. The episode does not rate that low but then many fans were left very unhappy with how the whole series wrapped up.