Because DW grew up here!
I was born and raised in CA. But during college, I met DW, who was from IL. Since when I graduated college I would be looking for a job, yet she already had a job, it made sense for me to move instead of her. So we ended up here in IL.
I'm glad we did end up here. I'd like to move to another state some time, but it's nice here. Plus, I'm glad I got out of CA. I was so provincial back then, like a lot of folks from big population centers. You start believing the hype that whatever city you live in/near is the best at X, or has the worst politicians ever, or whatever. But after I moved, I realized it's all pretty much the same everywhere. People are people, and do peopleish things no matter where they are.