When I studied photography as an undergraduate student, I naturally gravitated toward black and white. What else could a young fan of heavy metal possibly like?
Then I discovered color, and everything changed. I remember the excitement of buying expensive, tungsten-balanced film for ten dollars per roll in order to shoot muted indoor scenes, and spending an hour just balancing the CMY(K) of a single photograph in the dark room. But the result was worth it!
Yet, some of my current DSLR work is naturally suited for black and white. Things come full circle.