A Great Disturbance in the Force

As someone who counts Obi-wan Kenobi among the people I most admire, I find this "What if" depiction of a Dark Obi-wan deeply disturbing. It's a well done conceptual drawing, that's for sure. Given the tragedy Obi-wan experienced throughout his lifetime, what on earth would ever seduce him to the Dark Side? I'm typically not very interested in such alternate universe tales but this picture has piqued my curiosity.