When DVDs first came out in the early 2000s, it was a huge deal for movie-fans. Not only was the film now available in "superior" quality (aka 480i), but you had the ability to skip scenes, watch trailers, and of course, see the deleted scenes. Directors could keep their favorite shots that didn't make the final cut and bundle them up into a fun 35 minutes block to be watched before, during, or after the main feature. Imagine...more scenes of your favorite movie! Some directors (mainly just Peter Jackson in the Lord of the Rings) even went so far as to intentionally film content which was only meant for the DVD. He basically had the ability to make two versions of the movie...the super long DVD one, and the theatrical release.
Of course, it didn't take long for people to realize something: deleted scenes were deleted for a reason. They're not always terrible...but usually I found myself thinking "wait, that's it?" or "but that information was already revealed" or "wow, this really makes the ending drag out". The film was put together not just as a random collection of content, but as a carefully orchestrated work with rises and falls, highs and lows, and clear ending. The deleted scenes are fun for a few seconds, but then you realize your original favorite film is a bit less. It probably should have ended the way it originally did.
If the school year were a movie, today would be a deleted scene. With my students all gone. I find myself realizing that maybe my year should have ended yesterday as well. It's nice to get a little more time to prep the room for the summer; but the original ending was better.