How do I explain my passion for something if it didn’t come from a life changing personal experience

I know that somewhere in your application you basically talk about your backstory and how you discovered your passion for your chosen major. Many people write about something personal that happened to them that triggered this passion. But what if I developed an interest in my major through, say, podcasts or a fiction movie that I stumbled upon? I feel like that would be boring to write about and lead to a weak essay that does not grab the attention of AOs.