It's the wall-to-wall, non-removable stuff that I hate. Sound-deadening could be accomplished with something that doesn't suck up water like a sponge and hold it until mould and mildew set in. My old truck with the rubber floors was plenty quiet, and every bit as comfortable as it would have been with broadloom-lined floor pans. Winter mats do some good, but they always end up with water underneath, where the rubber toppers just keep it from drying out.
My Dodge minivan has seat fabric that repells dirt, stains and pet hair. The carpeting, on the other hand, attracts and holds dog hair like a magnet. Not good when you have three dogs.