what is purpose of staff meeting

[just got fired]

When I mention staff meeting here, it is the one where all the staff in the team meet to discuss broad issues . Meetings to discuss particular topics such as a new marketing campaign are obviously important and needed.


What is the real purpose of staff meeting ?

Do you feel that staff meetings are there to approve the existence of others ?

I feel that weekly staff meetings are a pure waste of time and a good manager, does not need to put all his team in his room and hear what they are working on or their problems he should know about these in advance.
Some people use meetings to approve their existence, to make sure that the other know they are important.