Color or black and white

Sometimes during the editing process I wonder if an image is better in color or B&W. This is a prime example:

At times the idea of using B&W is because I can't seem to get the colors to look right or I was unhappy with the original lighting and B&W is a way to salvage a photo.  In this case, I think the black and white has a nice feel for the old barn.  What do you think?

What method does everyone else use with B&W editing? Do you have a specific process you use for the B&W workflow?

As a side note about this photo. I love this barn, but I am not super happy with the photo itself, The sharpness isn't what I really wanted. Mostly I think it was the lack of a tripod.