For me it's a combination of privacy and wanting to be able to experiment as much as I want without limits. I'd happily take something that is 80% as good as SOTA but I can run it locally 24/7. I don't think there's anything out there yet that would 100% obviate my desire to at least occasionally fall back to e.g. Claude, but I think most of it could be done locally if I had infinite tokens to throw at it.