So much of my life is driven by chance and circumstance. I start out heading down one path only to find myself on another. I go into a camera store intending that my next camera will be a Sony. But sitting in the cabinet is a beautiful fully accessorized Olympus OM D EM5 at a reasonable price. So now I am a M 4/3 shooter.
So in answer to your question "Why" I will give the only answer I can: