Might be because the image is too heavy on the gray scale?
No. An image doesn't need to be passed through bubblegum photoshop plugins in order to be appealing. Any viewer can see a good composition and image beyond muddy grayscale.
Besides, a good long grayscale is desirable in BW photography.
Well, then I guess I have failed. 🙁
Nah NH-3 you didn't fail. It's a good street scene and you captured emotion. 🙂