It is not about shooting subjects that lack color to start with.
There are some photos that you may think will look great in black and white because they lack color, to begin with. A photo of a black and white checkered floor. A close-up of a zebra. A dark, gray sky. You may think that these photos will benefit from a black and white filter, but the truth is that great black and white photography is all about telling a story, highlighting a subject, and expressing emotions, without the distraction of colors. It is not about shooting subjects that lack color to start with.