As for me, I think what drives me to root my N7 is the ability to customize
If I have a rooted tablet or phone, then I am able to install Xposed
Framework and tons of modules.
For instance, the battery bar on top of the screen, since I can't find the battery indicator inside the default settings.
And a lot more, the eyeful transition animations, the colorful status bars while different apps are running, and so on.
Aside from customizing my N7, I also want it to perform well without being occupied by some active apps.
Hence I install Greenify
, which helps me manage my apps and improve(?) my battery life though it already has a quite decent battery drain.
And of course, it is required to have root access, too.
Just share my some thoughts with you.