The benefits of rooting are one by one disappearing see this thread http://www.transformerforums.com/for...maybe-why.html
One of the original reasons was to use Titanium Backup, solved by ASUS including an app backup app. Another was to enable use of some VPN software such as AnyConnect but I believe Cisco as a version now that doesn't require it.
I do need to mention that a huge number of problems reported on this forum originated with having been rooted. As that thread says, you must first have a good reason, then do your research.