On Android based phones I consider rooting essential. you get to run apps like Titanium backup, You can Freeze bloatware that the carriers put on your phone... These bloatware apps run in the background and eat up alot of CPU cycles, such as the social location app.
The most important thing to remember is; if you dont exactly know what your doing, read the forums and follow what others are doing. There is a great thread on what apps you can freeze and CANNOT freeze in the Bionic forum, these apps also apply to the RAZR
If your worried about it, go through the everything root thread and read up on it. Also check out the 'Everything Root' thread on the Droid Bionic, basically the same.