We are not talking of the computer only but also the phone. For sure your phone has a lot of pictures and videos. Do you care to save a copy of those pictures and videos to another memory card or to a USB drive? The files in my computer have a backup just for safety. In my experience I had 2 hard disks that got broken with the files there couldn't be accessed anymore. Fortunately I have an external hard disk for the backup so I only lost the not important files. For your phone, be sure to save the files every week so that your backup will be complete.