You see, I have a very specific way the characters sound in my head... I heared Goku, Gojyo and Sanzo and they really didn't sound like they do in my head... I really prefer keeping my own image of things...
I'm a huge Harry Potter fan, but never saw the movies past the 2nd because I just couldn't stand them... When I read something I have an image in my head of how it should be and I really don't like seeing it any differently...