We were watching a large herd of elephants trying to decide whether to cross a crocodile-infested river. The animals had been standing in the river for several minutes, so this was a good opportunity to switch the camera to 'monochrome.'
When I got home, I submitted one image (I would have submitted more but my computer was acting up) to a photo contest at www.viewbug.com. You can see the image here: https://www.viewbug.com/photo/74378314?type=myaward and below. I was pleased the next day to see that a fellow photo enthusiast had given this image a peer award.
I took a couple other shots in monochrome as well.
Finally, I took this image of several Samburu warriors celebrating and dancing.
I don't think I will switch all of my photography to black-and-white, but it's fun to see the world from a different perspective once in a while.