My Memory

Is it good to remember all?
What of the brain have a limit to remember?
What of we find a way t remember all?
Is it good to flood the brain through shortcuts?
Would that affect the functioning of brain?
So it better to remember the useless?
But what determines the useless?
How can one tell,it won't be useful In future?
So,do we have to overload and store or just save the needy?