The anticipated EOL for Windows 7 will be in 2020. We may not be tapping on keyboards by that time and a PC may be the size of a wrist watch or smart phone.
Windows lifecycle fact sheet - Microsoft Windows Help
The end of life does not mean that the product stops running. It just means that Microsoft will no longer provide updates. I know a few people who are still using Windows 2000.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin