As I've mentioned already, personally I can see pros and cons, it depends of the subject, and the story the artist wants tell
As we know, the colour has its importance in our life, we do react differently to colours, which can play a big therapy role...
A quick Google search shows, that even man and woman reacts differently to the colour - I didn't know about it till now...
But when I concider the colours women are dressing...
Men usually choose different colours...
"... In studies, colors have been shown to change alpha brain waves. According to EEG and pulse measuring systems, men and women react differently to colors. When color is transmitted from the eye to the brain, the brain releases a hormone affecting the emotions, mind clarity and energy levels."
What about children?
I bet children books are rich in colour!
Kids must sense them different too?!
I think an addition of the colour in art acts as a direct guide to the viewer mood, because of the subtle sense of how our brain reads colour unconsciously and directly.
We can use it the way the musician piano, by playing exact tones on his instument he's able changing listener emotions, feelings or attitude.
Make them think, make them love, make them sad or aggressive... etc.
As much as I love graphite, I'm always appreciate the colour, which can be useful to guide the viewer throughout our drawing.
Here for example I can put the latest JayS drawing "Little horn".
Our friend artist did his best to create his beautiful drawing, he wanted us (the viewer) to appreciate everything JayS had experienced watching those stunning animals in their natural habitat.
So to JayS the animal was as important as the background, and because the art is drawn in graphite, we all have been a bit challenged to distinguish the foreground from background.
In my opinion it wouldn't be the case if the drawing was in colour...?
The river would be in blue (for example), the hills or mountains in grey, and that black shape dear Mike, that you thought it could be a buffallo or tree, would be more clear to read too...
Following the above, I think the graphite drawing is more about the shapes, light ... *theatre art alike?
Where colours comes to imagination easier?
The black & white art I read differently...
In my opinion it's as much important and unique in our lives, the way we read the artistic nature of the subject.
In black&white we can address all spectrum of emotions too, by playing with shapes, light and dark, values...
All I am after in here, is to express my personal point of view, of what b&w and colour art means to me
Laurene, I don't know who I am anymore 
?
And, occasionally, I still do. Because you never know what you might discover, and that it might be a complete game-changer for you. 