I think most people saw the annoying little flag in the notification area letting users to "reserve" the upgrade, so here's your reason: it won't go away until you do upgrade.
Again, that would apply to the geek user: he would upgrade just to get rid of the annoyance.
Common people typically handle annoying things in the "computer" realm: browser toolbars, pop-ups, advertising, crapware, malware. Yet, they don't upgrade because it seems "complicated", it's "technical", or something like that.
We, IT professionals as a class, have a hell of a lot to gain just by talking and watching common users.
There are not that many THAT "common people" anymore with regards to technology. And even them buy a new computer ever 5 or so years or have someone who knows take care of their installations.
Sure it will. Just uninstall the Windows update KB3035583, and there it is, gone.
This is by far the most common question my less technical friends and family have been asking about their computers recently. I must have done this for 4 or 5 different people already, and entirely unscientifically it seems other technically inclined friends are getting the same request. It appears that I don't know a lot of people who actually want a new version of Windows on their existing, already working PC.
Personally, I've been recommending ignoring any Windows updates that are not explicitly security updates for quite some time now. Microsoft seem to have developed an unwelcome habit of pushing things out via that mechanism that might be in their own interests but aren't necessarily in the interests of the users.
