Why link an object to a process? What happens if It is not done ? Please clarify.

Dear Ricardo, 

This element is needed to track what objects were used in the process. It just adds the object to the corresponding record in process log. It doesn't do anything with the object itself and nothing would happen if you don't use it, however, it is easier to track the process flow with this element. It takes an extra space on the site though and process runs a bit slower.