Think about it. The last time anyone gave a crap about a new Simpsons story was when The Simpsons Movie came out in 2007. The embiggened hype around it was palpable. They even took 7-Eleven stores and transmogrified them into real-life Kwik-E-Marts.
And even though the franchise was well past its prime by that point, the movie did very well, making over $500 million worldwide and receiving a cromulent 88 percent on Rotten Tomatoes. If The Simpsons ended its TV run but continued in movies, we'd be able to enjoy the citizens of Springfield without getting so goddamn sick of them. And creatively speaking, if they were working on big-screen adventures, the writers presumably wouldn't resort to referencing their own memes.