What does your current lens collection look like? I would think that a fisheye would be last on anybody's list as it always looks the same. You shoot 200 frames with it and no matter how different the subject matter is, the photos will all look the same. You don't get that with a typical prime/zoom lens as they offer much more versatility. Don't get me wrong, I would love to own one, but I know that there are very rare occasions in which I'd use it, so maybe one day when I'm making some $$$ from shooting, I'll be able to justify it. Plus you don't want to be the guy with 200 fisheye shots making up your photostream (or maybe you do, idk).