I started using it on and off like, a decade ago. I still don't utilize everything it's capable of (I probably use ctrl+1 more than anything) but it's definitely handy.
For basic note taking I still defer to google's keep on my android phone/pc's web browser, but that's just for stuff that amounts to the functional equivalent of a post-it note in my back pocket.
For anything more serious, I still whip out OneNote.
It's improved a lot in the last decade, but the idea was there quite a while back and proof-of-concept stuff was shown off by Gates back when EverNote was brand spanking new almost a decade before OneNote actually came out.
I kinda wish MS would buy/create/fund a piece of included-with-windows/office mind mapping software similar to
https://thebrain.com/ for a much needed boost to their whole productivity ecosystem.
Maybe it's just me, but I find that particular piece of software to be far more useful than, say, a knowledge base. I stood one up for my department at an old job ages ago back before IT Glue was a thing and found it to be ridiculously helpful and easy to use.
Certainly miles better than any combination of any of the myriad of KB/ERP/CRM/SalesForce/Sharepoint implementations I've ever used, but that might just be due to how my brain works.