A lot of people worldbuild when they daydream and have the bones of a story kicking around in their brain, but have to pay the bills and raise the kids etc so they never flesh it out and write it down. What’s your story’s premise? Fantasy, sci-fi, alternate history, mystery, western, whatever genre.
I’d write a sci-fi story, which explains the fermi paradox. There are thousands of alien races all over the galaxy, but they basically all took one look at humankind and said “fucking hell no, those guys are absolute dicks”.