Another non-artistic/drawing user here. I use it a lot for annotating PDFs and making quick notes.
Actually I have one use case at work that I find interesting. I sit in front of an iMac during the day, and a few times each week I receive PDF documents that I used to print out, mark notes by hand, and then scan and put back onto my Mac for future reference/work. With the iPad and Pencil, I use iCloud Drive and open them quickly on my iPad to markup with the Pencil, and then within seconds those updates are reflected on the Mac. Saves time and paper and really makes it an interesting work tool.