Similar situation for me. At work, I have to use MS Office. But for home and church, My go-to productivity suite is iWork... unless I know that what I need to do won't be easy or possible. (That's when I'll use iWork '09, LibreOffice, and MS Office, in that order)
The consistency in look and feel and file compatibility between the iOS, web, and macOS versions of iWork is outstanding. This allows me to pick up any device from my ever-growing pile of devices, and be able to easily work on documents (stored on iCloud). For example, the web version of iWork is a surprisingly good experience on a chromebook.
As others have mentioned, there's still a functionality gap between the current version of iWork and peak-iWork, '09. They're closing that gap... but at a glacier's pace. Thankfully, iWork '09 runs on High Sierra so I'll be good for a bit longer.
Even though they initially gutted iWork to achieve functional/file compatibility across systems, there are still some niggling little omissions on the iOS side that can be irritating. For example: there's no way in iOS Pages to force numbering of a numbered list. (start with "3." instead of "1.")
But an update is an update, which means it's still being worked on... and that's good news for us iWork fans.