There was a time when Bing wasn’t worth serious searching. That time is no longer. I have noticed Bing giving better results than Google for some programming related searches. For example trying to modify a WordPress install to override permilinks for some directories. Bing gave me the answer that worked.
I remember the reason I started using Google was for programming related searches (in fact that’s what my Computer Science professor used it for) and only after that for everything else.