Like you, I have been using Office since the 90's at home and at work. I subscribed to Office 365 annually. But for my wife's home business, we decided to use Google Doc. She has workers all over the world. We can't provide everyone a copy of Excel. So Google Doc it is and it is great for they all have to share in the cloud.

Even though with Office, my files are saved locally on the hard drive, my document folder is sync to the cloud. I am working locally but backup in the cloud. I think Google Doc will take over for most people. My son's junior high and high school uses Chromebooks and google docs exclusively. We had some college interns at work and they had never used Office tools. I even use Google Doc for many of the things. I use the Google spreadsheet to keep my smoke alarms batteries change history, my oil change history (before I got EVs), and other time related stuff. It is just easier to pull it up on my phone to update instead of trying to get to my computer to run Excel.