Not Backing-up has other downsides:
-          The person loosing the data will have to redo weeks / months / years of work
-          Some information is impossible to recreate (pictures / personal music / personal documents / client contacts and databases)
-          The cost of having a service technician attempt to recover lost data can far out way the cost of doing the backups
-          Your reputation can be questioned, if client data is lost.
-          It can harm your business if you loose client records that are critical to the function of the organization (financial records, client contact databases, etc)

What should you do:

How can I protect my data?
-          Backup regularly (frequency will depend or your appetite for risk)
-          Backup frequently when working on important projects
-          Implement one of the many backup solutions, which range for manual backups to full automated
    -        Manual Backups (each client would have to copy his or her files to the backup media)
             Media can include:         Second Hard Drive
                                                        External Drive
                                                        USB Key Drive
                                                        Writable CDs
                                                        Writable DVDs

    -        Automated backups (backups are done without the need of the client to do anything – usually on a set schedule)
             Optional Equipment :     Secondary HardDrives
                                                        Server with multiple drives
                                                        Offsite data storage
                                                        Network Drive appliance