Pretty long ago, I found that I love to use those high range zoom camera (my first DC has a zoom range of 10x). I don't really know the answer for that until maybe recently when I bought a fisheye.
In Hong Kong, fisheye lens is intrinsically hard to use. The problem is, it's so crowdy in terms of people, building and whatever, and it makes the composition very complicated if you use a wide lens.
In a highly complex (I mean non-organized) environment, you simply cannot find a view big enough for a fisheye. I guess taking portriat with a large background could be nice, but then the usage is still very limited.
Therefore, I wish that I will be able to get chance to shoot the night sky, and also for the coming trip to another country shortly. I guess I will want to sell it soon afterward.