Currently I'm still using Windoze 8.1. It does all I want, and I've got used to it. But it does have some really annoying things that I've been unable to turn off - the charms, for example.

I also had a really stressful experience when it automatically updated to 10 a few years ago. I spent ages trying to roll it all back. Normally, I don't allow updates, but that particular one caught me out. Also, I now get messages every time I start the laptop telling me that I have to update to 10 or my device will become unusable. I can see this situation getting worse once 10 is forcibly replaced by 11 later this year.
Recently I've read of someone using Linux. To be honest I didn't understand a lot of the language, but it seems to be a case of "install it and forget it". No forced updates to deal with - or learn to live with. But is it useable enough for a technophobe? I bricked a laptop years ago and don't want to risk doing it again.