I have rooted my SP about 10 times give or take
The last 3 days i kept changing and trying roms and flashing kernels(i relocked and unlocked my bootloader 2 times) (most used program in my PC was flashtool :P )
But thats just extreme so i slowed down. Overall as zolaisugly
said rooting helps you
and dont mind about the small bugs that can be repaired easily
Also to make your decision easier you can use these apps : Titanium Backup , Greenify , Light Flow (helped me a lot) , Folder Mount , Link 2 SD !!!!
It just worth it !!!!
If I helped spam that "Thanks" button
Phone :Xperia SP
Android Version : 4.3
Kernel:Stock .266 Kernel with CWM rootable by Doomlord