Even if rooting has not been much popular like it once was, there are still some people doing it. So without wasting much time I'll jump directly into it.

Pros :

-Rooting frees your Android phone from the clutches of the mobile carrier where you got your phone from unless you got it unlocked. If that’s the case, rooting frees your phone from the restrictions of the Android OS.

• Rooting allows you to install “unofficial” and advanced versions of the Android OS. Generally, Android OS are carried over-the-air by Google and selected carriers to their Android-released devices. And this usually takes awhile to happen. Luckily, there are developers who make this updates available and the only way you can install them is to root your phone.
• Rooting allows you to uninstall stock apps which are most of the time useless and were pre-installed by the manufacturer or your carrier
• Rooting allows you to back up your phone’s system to an SD card so that you can try out custom ROMs and revert back to your old system
• Rooting allows you to move apps to an SD card instead of cramping your phone’s internal storage.
• Rooting allows you to use custom operating systems that will render your Android phones more useful.
• Rooting lets you overclock your phone’s kernel, making it performs faster than it was intended to perform by the manufacturer.
• Rooting lets you fully personalize and customize your phone’s interface with cool themes, wallpapers, widgets and more.
• Rooting let's you install various cool apps that require root access. Some of them help you cheat in games and some can even hack a WiFi.

Cons

• Rooting might void your phone’s warranty.
• Rooting can cause your phone to act abnormally, especially if not done properly.
• Rooting renders your phone unqualified to receive OS updates through OTA. So you will be on your own to look out for valid sources. The good news is that your phone is probably running the latest OS after you have rooted it.
• You’ll be spending more time with your phone since rooting entails constant updates and all.
• Rooting may make your phone perform faster but there are downsides to it specifically running too hot to the point of overheating your device.
• There is a slight chance that you might brick your phone if rooting is not done properly.

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