I thought I was the only one! My gaming PC hooked up to our living room TV has nagged about the upgrade for months, and I dutifully closed the popup window each time I saw it. About two weeks ago, I turned on the TV to find a new login screen and noticed that my remote keyboard and mouse daemon had stopped. All in all, Win10 has been just fine, but I had no idea how it managed to install itself without my direct approval.