And what are the differences to a TV series which doesn't? An ending example: "How I met your Mother" or "Two and a half men". A never-ending example: "Big Bang Theory"
Most Helpful Guy
The show was successful enough and the producers decided to end it before it lost audience or before the story started getting nonsense. There's also the possibility that the show wasn't very successful but it had enough audience for and ending to be filmed.
Shows that never end normally have a very stable audience and the plot has the conditions to keep going.0