Funny all the crazy things we believed in back in 1983: imminent nuclear holocaust, supply-side economics, Hitler’s diary, and the Star Wars franchise coming to an end after just three films.
Return Of The Jedi was not the end, or even the end of the beginning; later Star Wars movies have been set chronologically both before and after this. But Jedi does conclude the original story arc about a farm boy who discovers himself to be the son of an evil galactic overlord, and how he and his friends restore good to the universe.
As a movie, it’s widely regarded as the weakest of the original trilogy, but it does something no other Star Wars film ever attempted by wrapping everything up.