I am thinking about rooting my galaxy s4 since my friend suggested me to. He says that it would open a lots of options and I would be able to install other apps. However, I am afraid that it would damage my phone.
Welcome to PinStack! We have several experts here on the forums who would be able to help you out. My Note 3 is rooted, and I even did it myself! There are tools out there that make it pretty easy. You can flash a custom ROM that would virtually eliminate any carrier bloat and unwanted software, really trimming down your device. What carrier are you with?