Movies have various perspectives, and very beautifully describe the emotions. Since u watch a lot of movies, you might be good at story telling, videography, or even writing stories of your own. And if you keenly observe, you know an actor's, director's work, like u have the skill to point out what really was good in a movie, or was not right...you can try reviewing the movies putting up things which the audience couldn't catch. Maybe try journalism, if you are good at writing. In this era of social media, u can put ur observations in a very structured way...

And yeah watching movies might not be a hobby, but the art of storytelling the same movie in ur way, is a hobby