Windows 10 S - your whole life is a slippery slope. You always have to keep up the ballance of things. And Windows 10 S is not a devil. Even so, Microsoft is not. Also, MS stating (https://www.microsoft.com/en-us/windows/windows-10-s) "Microsoft-verified security: Your applications are delivered via the Windows Store ensuring Microsoft-verified security and integrity." seems pretty obvious to me. No app through other means than Windows Store. Furthermore, you can upgrade WIndows 10 S to Pro. MS Paint - it is not killed (at least now). It will be a separate UWP download on WIndows Store.