I do drive but I still don't use voice dial as I'm sure a lot of other people don't. It's a relatively useless feature to me.Don't drive, do you? Voice dial is essential for safety when using the phone while driving.
Also, please do not use "retarded" as a generic insult. It is offensive.
If you are easily offended by a word that wasn't even directed towards you I'd recommend staying off of public forums