This is my first fisheye picture. I didn't really know why I bougth that lens. Guess it was intuition. Later I read that this wasn't really a useful lens and my purchase seemed like a waste. But then I put it on and I was amazed how fun this lens were. Now it's one of my favorites! Don't listen to others, follow your own heart.
I found the fisheye very creative. It challenges you to do more, to find that picture which you know is there. It's fun in a wicked kind of way.
The extreme 180° angle of view however, makes you shot your own legs and shadow. If only I was made of glass...