That's a difference in kind, not degree. People find watching movies interesting, not making them. They're two completely different experiences.
Interests don’t stay in boxes. They grow tentacles that reach up and down the chain of production. They bump up against adjacent fields and they make the whole world look a little different. A single curiosity will evolve and change form over time. The beginning of it might not be boring to others, but if you take it far enough the end probably will be.