It can barf out large outputs fast. As long as you review it and clean it up, it can get you 90% of the way there on a lot of things where you know what the final output should be basically. Need a quick bit of code for a common process? An email requesting a meeting? A picture of a dog burying a bone? A list of which people might be the suspect in the video? Then AI is great!

Need math? Accurate texts or image matching? Use a different tool.

I can envision use cases like wanting to be able to search through all your documents or photos when you can't clearly remember what you wrote (assuming it's properly implemented and well-secured, e.g. path-constrained time-limited read-only access), or local chatbot for brainstorming, or if you want to play around with agentic "AI" (automating small things on the local system that aren't easily scripted) then having one that is private and properly sandboxed would be helpful.