There's a difference between security and stability updates and major version changes.
I have no compelling reason to upgrade my Windows 7 machine to Windows 10; 7 performs all the tasks I need it to. I do not trust the privacy changes in Windows 10, which is more reason for me not to upgrade.
I've disabled the Windows 10 upgrade path, but otherwise keep it up-to-date on all patches.
What do I do when Windows 7 support ends? I'll cross that bridge when I get to it... but that bridge won't be to Windows 10.