Black and white is also a good way of reducing a painting to the bare essentials so I can produce a drawing from it to use as a basis for sketch for a painting. And I used to do photography just as a way to research paintings.
The photograph below is in color for this week but I have it in the folder for next week as a black and white.
It is a difficult leap to take a photograph with deep blues and desaturate it black and white but the whites of the aspen barks are stark elements in the photograph below.
And the old building in Ocate was almost over-powdered by the colors. I tried it in black and white just to see what I would get and also to make it an easier subject to draw.