I guess it's always a personal choice, and we all see things differently. For me, it works pretty nicely, as I don't see many "pure" black and whites in an evening cityscape. There is a lot of interest in the image, and I find myself looking around at the details.
There's a certain softness to the street lights that lend an aura of tranquility to the image.
To me, it would be considered a "keeper" if it was mine.
Good work!