LibreOffice is preinstalled in Pop OS, and as someone who loves the idea of FOSS I want to use it, but inevitably I just use Google docs or Office Online. Is it really worth learning? Has anyone successfully incorporated it into your workflow?
Whether it's worth learning or not depends on what you're trying to accomplish. The basics are easy enough to pick up and don't deviate much. It's only when you get a bit deeper in that stuff starts diverging.
As for use case: If I was strictly looking for private use, I would absolutely pick LibreOffice over the alternatives (cloud-stored data is, ah... well it's a thing until it's not.) I did not use it extensively when I did try it (Windows and Ubuntu) so I wasn't quite able to get used to some of the differences. Likewise, there was far more information available for the Microsoft Office and Google Docs suites, but that is more a matter of mind share than quality of the software.
Right now I have no need for that kind of editing outside of work, and for work, I just use what's provided. Currently that's Google Docs and has been Microsoft Office in the past. I don't know that I'd steer away from either of those for a decently sized business - something being industry standard means it's something people are used to working with, after all - but for a small outfit, I'd probably go with LibreOffice still.