Windows 7 is the new Windows XP, here's why...
Here's another great article. I encourage you to need the whole thing, but I've posted a summary with the link below:
But what if Microsoft’s scariest nightmare comes true? What i[f] Windows 7 becomes the next Windows XP? What if most users refuse to upgrade and continue to use Windows 7 until 2020 when support expires, and even beyond.
We believe this is a very probable scenario for the following reasons:
1. Users are frustrated and feel Microsoft betrayed them.
2. Lots of Windows 10 bugs!
3. Windows 10 collects very private information about its users — more than Windows 7 does.
4. Windows 7 still runs fine.
5. Old peripherals might not work on Windows 10.
http://windowsreport.com/windows-7-new-windows-xp/