For a lot of photographers make a photo black & white is a way to make a bad photo look better. For me, black & white is a way to show the world in a way most people don't persevere it.  I believe that a black & white photo can induce more emotion then a color one,  if it is done right.  Some say you should set your camera to shot black & white but I say shot color and then develop the photo in post to how you want it to look in black & white.  Be creative, be bold,  if you have a emotional response to the photo then others will as well.