Sometimes you realize during the processing that you got a good shot !
I just bought a used Canon 70-200mm/4 L and wanted to test it out in the field to see if everything was working as it should and the that the IQ was what it’s supposed to be. I was taking some boring photos of a bridge as a test target, then I decided to walk along the shore of the lake. Directly on the edge of the water I saw a Big Male Bullfrog, I set-up my tripod and took some shots without much hope that it would make a good photo. When I got home later that day I opened the photos and did my regular processing but the photo was not that interesting.
Then I tried it in B&W to see how it would look, it turned out to be a better shot, by eliminating the color the pattern of the weeds surrounding the frog was put in evidence as well as the water and also the texture of the skin on the back of the Bullfrog. Sometimes I know when I took a shot in the field that I will do a B&W conversion but other times I realize during the PP that a B&W conversion is what a photo needed to really come to life.