Why do some movies have after-credit scenes?

After-credit scenes, also known as post-credit scenes or stingers, have become a popular trend in the film industry. These scenes are usually short clips or scenes that are shown after the main movie has ended and the credits have started rolling. Although the idea of an after-credit scene is not new, it gained mainstream popularity after the release of Marvel's ‘Iron Man’ in 2008.

The main reason why movies have after-credit scenes is to tease the audience and build anticipation for future sequels or spin-offs. They are used as a way to create excitement and hype around upcoming movies in a series, or to introduce new characters that will be featured in future films. After-credit scenes also provide an opportunity for filmmakers to include additional content that may not have fit into the main storyline of the film.

Another reason why movies have after-credit scenes is to give the audience a chance to catch their breath after an intense movie. Many action-packed films end with a lot of tension and emotion, and the after-credit scene provides a lighthearted moment to relieve some of that tension.

Overall, after-credit scenes have become a popular way to keep the audience engaged and excited for future movies. While they may not be present in every film, they have become an increasingly common feature in modern movies and are likely to continue to be used in the future.