Stealth Office 365
I have Office 2010. For what I do, it does more than I need. I write simple stuff that doesn't need much formatting. I put together the occasional spreadsheet for personal use. Once in a while, a few times per year, I copy a picture or graphic from the web and paste it into Paint. Once in a while, less than a few times per year, I'll download a PowerPoint presentation someone has put together.
I don't want Office 365. I don't use most of its features, and I don't want to pay an annual fee. Yet when I started work on my novel today, I found that Office 365 had installed itself, or had been lurking in the weeds all along, and now it was insisting that I accept the terms of its license.
Fortunately, uninstalling the misbegotten thing seems to have solved the problem, and Office 2010 appears to be working again. I can see, however, how Microsoft incites such deep hatred.