I disable everything I don't use. I even disable Google+, other Google services I don't use, all the Samsung apps it will allow, widgets I don't use...pretty much anything it will allow. I like how Jelly Bean even lets you hide icons from the application list that you don't use.
If you have root, you probably can disable system functions. With the stock AT&T OS, it's not going to let you disable something vital to the system.
Long story short, disable it unless you find a reason to turn it back on :-)