Thank you for your respone :)
The main motivation behind the number 8 is to monitor the health of your application. This is specially useful for developers
* when front-end engineers claim that they ar not getting proper response
* Check version mismatch after upgrading to a new version
* Find any performance bottolkneck without mocking or extensive debugging.

And many more. This is more important where your API is being consumed by other developers who are not involved in the lifecycle of your application.