

You are definitely being creative in a roundabout way, but once you have all that work done, you can theoretically tell almost any kind of story within that setting.
I have been doing this in a very minor way (compared to you) in creating a D&D world so that I can step in at any point in history with an adventure and have the players version of the world change through their cumulative adventures.
I don’t have 5000 years of detailed world history or even a completed world map yet, but I am having fun and so are my players.
So to tie all this up, you are doing this for you and having fun with it. Why stop now? Write your stories. Maybe find an audience.
More or less though that writing process is similar to Tolkein’s. Make the setting well enough and the characters will suddenly start to make their own decisions for you. (And then you rethink earlier decisions when you get better at it and need to retcon things.)








Don’t judge my musical taste.
Eric Carmen’s ‘Make Me Lose Control’ was on the radio a lot and it resonated with me.
I ended up calling the radio station to find out what song it was, and then learned that my mom had bought that tape on accident because she thought it was Eric Clapton.
Months later, on a camping trip with grueling hikes (to chubby young me, not that I am less chubby), I was singing variations on those lyrics as motivation to keep moving. Dunno what my Dad thought of this.
On this trip, my grandpa and step-grandma hiked in to say hello and have dinner with us, only to have my 14 year old sister (on her period) lean out of her tent to vomit on their feet.
Good times.