What is the reason behind some actors choosing to direct their own movies? Is it for complete creative control or for another reason?

One of the primary reasons actors might choose to direct their own movies is to have complete creative control over the project. By directing the film themselves, they can ensure that their vision for the story, characters, and overall aesthetic is realized on screen exactly as they envision it. Directing allows actors to express themselves artistically in a different way than acting alone. They have the freedom to explore their own creative instincts, experiment with different filmmaking techniques, and bring their unique perspective to the storytelling process.

For some actors, directing their own movies is a way to expand their career opportunities and challenge themselves professionally. It allows them to take on new roles and responsibilities behind the camera, which might lead to greater versatility and longevity in the film industry. 

In many cases, actors who choose to direct their own movies are deeply passionate about the story or characters they're bringing to life. Directing allows them to immerse themselves fully in the project and have a more hands-on role in shaping its outcome.

By directing their own movies, actors can also have more control over their career trajectory. They can choose projects that align with their artistic sensibilities and personal interests, rather than relying solely on the roles offered to them by others.

Directing a film can be a challenging and rewarding experience that allows actors to grow and develop professionally. It requires them to step outside of their comfort zone, take on new responsibilities, and collaborate with a team of creative professionals to bring their vision to life.