This has restored itself several times, for me. It took me uninstalling KB3035583 four times before Windows Update finally gave up trying to shove it on me. I want to use Windows 7 as long as it's supported for.
(StupidQuestion)Did you make sure to hide the update after you uninstalled it? That was a key part of keeping it from being reinstalled automatically.(/StupidQuestion)
It always floors me how Microsoft deviates so heavily from their trademarked addage:
Where do you want to go today?
and instead, seem to focus more on
You WILL go HERE today!
To be fair with the retiring population meaning that more and more users are older people who don't necessarily know how to use computers well this is exactly what you want to do. While taking control out of the hands of the users is something that is very annoying to someone who actually knows what they are doing (even a little bit), it's the exact opposite of what you want grandma and grandpa who have finally been convinced that computers can do cool stuff to be able to have access to. Because I can assure you that if you give them the option to turn off their antivirus and security updates, they
will do so, and then come complaining to your support that their virus-filled computer doesn't work anymore.
With the huge number of baby boomers beginning to retire and look into spending their money on more luxury things like computers, and with many of them smart enough about computers to browse the web and get into trouble, but not smart enough to actually get themselves out of it, an operating system that takes power away like that is exactly something you want. (Note: I'm not saying all Baby Boomers are like this, and I know many who are very computer literate, but I also know that a very substantial portion learned enough computer usage to browse the web and use Facebook, but has never reached the point of learning not to click on suspicious links, or that security updates are actually something you want to run on your computer.)
As a user I hate the idea of Windows 10 and everything it stands for (and I know that I'm in the same boat where my laptop won't be upgrading from 7 to 10 until the very last day of free upgrades), but looking at it from a business side of things knowing that a huge percentage of my users are going to not be knowledgeable enough to use the power I give them for anything other than getting into trouble, and are going to be the ones tying up my support lines if I do give them that power? I think Windows 10 is exactly the right thing for them to do in a business sense if we look at where the money is right now (heck, Mac did the same thing by making certain files not editable even with a sudo command without jumping through several hoops first, they're just a bit less obtrusive about it). Tyranny of the money majority and all that jazz.