Nah, I'd get depressed if everything was in shades of grey, give me colours every time.
Having worked in a darkroom for about 4 years if my life, I LOVE black and white, and can, even now, invert my vision so I can really see things in black and white..... complete with grain for some reason!
You just know when you do black and white well, the whites are white and the
blacks are black. It might sound a bit strange to say that, but its all too easy to end up with something that is a dull grey mess with sod all contrast!
To be good, the whites have to be white and the blacks black!!