Sorry Ed, I am not trying to put words in anyone's mouth but it is probably one of the safer bets you could make to suggest that noticeable grain is virtually an essential for monochrome work on this side of the pond.
Sometimes of course this leads to 'grain for grain's sake' especially for newcomers to mono work.
I take your point on the issue of colour but that too is strange as I think we tend to see history as black and white based on our experience of early news reels and press pictures. This I feel allows us to accept the loss of colour in a shot more easily. Whether it is a similar historical process that encourages grain I do not know but it is certainly interesting to hear the varying points of view.