If you can confidently say to yourself "I don’t need the data in this database", then no, you don’t need a backup strategy.
If the data in the database is of any value to you or your business, it is imperative that a backup strategy be put in place.
You should assume that the database may at some time become damaged or unusable, whether from hardware failure, environmental instability, improper program operation, human error, or malicious intervention.
To get the backup in place, recovered, and online, you must have a valid database backup and sets of procedures to follow.