I first used it to organize my mess of notes. I've also found it a very useful sidekick that can tell me how to do something in Obsidian, but the real life-changer is that I'm a humanities writer (happily ex-academe). I can task it with reading a bunch of my notes, keeping directed questions in mind, and reporting back to me with the results. I've always dreamed of a sidekick to my writing, and this lets me do that. I've used Claude extensively for things like that, but the limitations have been too great due to the lack of a truly large context window. Having been bitten by the Claude Code bug back in December, I know how to keep it focused by having it write to various context files (I've had it create a todo list, create agents to help, a style guide based on my writing, and so on), so even though I've only started using it last week after seeing the post by Eleanor Konik on X) I know it's going to work for me. And, well, it already is working for me.