It seems that with every Toy Story movie, even the very first, there was a feeling by many at Pixar that no sequel was necessary, but then the idea for one came along and that eventually eventually saw support grow. With the conclusion of Toy Story 3 and the end of Andy's story, it's clear that feeling was even stronger, and yet, Pixar seems that much more convinced that Toy Story 4 is a valuable addition to the franchise.