You do not want to be over treated. A Gleason Six does not call for treatment, It calls for active surveillance.
Things have changed a lot and doctors have been real upset about people being over treat with a Gleason six.

Here is a video with Dr. Laurence Klotz, one of the experts on active surveillance. He can give you answers as to why you would or would not be a good candidate for active surveillance.

Here is a video by Dr. Epstein discussing active surveillance and more