[nvrspyx]

For me, it's the mix of markdown documents and Airtable-like databases. It's much more productive than the various Excel-based "trackers" and Word documents in multiple folders that my team uses at work. Being able to automatically link relevant procedures and documents to specific work items, keep track of the status of those items, and having an all encompassing, interlinked "homepage" of all the relevant information related to my job keeps my cognitive load minimal.

I've used Obsidian and Dendron for a lot of this previously, but the real killer feature of Notion, IMO, is the databases. I'd kill for a local/offline-first alternative that also has mobile support, but I have yet to find anything as easy (other than Craft, but it's Apple only and the web version is still in beta).