Even if you feel you dont need any kind of advanced functionality of your device and perfectly content or even love the stock software of your device, rooting offers specific backup and security features that should appeal to just about everyone.
Once rooted you can run apps like Titanium Backup (TB) or Titanium Media Sync (TMS) -
Titanium Backup & Titanium Media Sync for Android Official Website
TB allows you to backup apps and related data on your phone that you normally don't have access to, like game save data. It has options to sync your backups to a cloud provider like Box, DropBox, or Drive so your data is completely off your device which is vital in case you lose your device or it goes for a hard fall or swim.
TMS allows you to choose folders on your device, like your pictures or music folder, and it automatically syncs your precious pictures and such to DropBox. Once again your memories are safe as they are off your device. I will concede that root is not needed as there are other similar apps but TMS is very intelligent and can upload your content to any FTP server for that matter.
Full nandroid backups are possible with root, a nandroid backup is basically a photo copy of your device..all your apps, where they are located on your home screen, login settings for email and more.
If you ever lose your device or it breaks, with a nandroid backup you can replace the device with an exact same one, root it, then restore your nandroid backup and it's just like the day you made the backup. With a couple flicks of your finger Titanium Backup will pull down your app and data backups from your free cloud provider and restore your progress in your games and more.
Being rooted allows security suits like Avast Mobile Security to offer more protection -
avast! Free Mobile Security | Antivirus & Anti-Theft App for Android mobile & tablet
With Avast Mobile Security on a rooted device it becomes difficult for someone to remove it from your phone and offers more features such as disabling usb debugging when you trigger it as stolen, pin protection to uninstall any app on your system, and the ability of the anti-theft module to survive a factory reset.
Beyond security you can extend the usefulness of your device like being able to connect a portable hard drive or USB stick to your device to watch a movie or transfer data with
StickMount. Using your device to boot a fubar computer with
DriveDroid which allows your device to host usb images like AVG rescue Disk, Hirens Boot CD, and even a complete Ubuntu or Knoppix linux OS.
Using TB you can freeze or uninstall all those crap programs cell phone service providers install on your phone that you will never use.
There are inherent security concerns with rooting as well, and the simplest way to make sure root access cannot be abused is to assign a pin number for granting root privileges, the best root manager is SuperSU and offers that feature in a free app.
I'm a huge fan of having a rooted device, and if your phone is a popular model you will find rooting it is actually quite easy and painless, not to mention you have a great community of knowledgeable folks here at Phandroid to help you along if you hit any snags or have any questions.
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