to answer your question... you can go to craigslist.org and find people that will charge you to do it.
but....
i highly recommed you do it yourself... so that you know what is happening..and how to fix issues.. and change settings..
if you have someone else do it.. you are locked to going back to that person over and over again.. charge after charge!
and with root access.. the user can use better tweeked kernels and ROMs to help performance in both speed and battery consumption. there are many benefits to rooting your device... just because you dont see the need, does not mean that others cant find it useful.
a good resource for rooting info:
www.xda-developers.com