When did Ray Bradbury decide to become a writer?

Ray Bradbury didn't decide to become a writer in a single moment. He developed a love for writing from a young age. However, a key turning point was when he saw the 1938 "War of the Worlds" radio broadcast. This event sparked his imagination and made him realize the power of storytelling.

He then started writing short stories in his teens. It wasn't until his early twenties that he moved to Los Angeles and began selling his work.

Therefore, while his early love of writing paved the way, it was the 1938 radio broadcast that truly ignited his passion and determination to become a writer.