I was going to let my old Win 7 upgrade itself to Win 10, just to try it all out. But the installer says something like, "briefly checking your system!" and then never ever gets past that dialog box. With utterly no information about what it is doing. Or if it is making any progress at all. For all I know it is just sniffing my entire network layout, and uploading everything it can to MSFT. I mean, even if I didn't already completely distrust Win 10 based on all the privacy / data issues that have been buzzing in the nerd news, the UX alone reaffirms my choice to try to be as much of a Linux head as much as possible.

(Do not get me wrong. Desktop Linux is an utterly terrible UX itself as well. And things like the Ubuntu-Amazon integration stuff make me strongly distrust at least some significant parts of the Linux world. But at least it isn't MSFT or Apple.)