I ask this cause other long running cartoons have been cancelled and brought back or had their creators consider ending the show.
Examples
-Stephen Hillenburg wanted to end Spongebob after the first movies
-Simpsons were almost cancelled at one point
-Family Guy got cancelled twice
-Futurama got cancelled like 3 or 4 times.
So has something like this ever happened to South Park. Cause I can't imagine them doing this show for over 20 years without at least throwing around some ideas for a finale.