Your organizations can live beyond your time at Furman and you never know when someone in the future might need to reference back to the documents your organization is making in the present. 

It can show the progress and development of your club over time.

You never know when files, either physical or digital (such as social media) could be lost and without backups.

You can choose what you do and do not want to enter into the archives, you do not have to preserve everything or anything you don't want to.