all of the above are excellent choices, as for myself it varies quite abit. I started out doing street scenes because of the wide variety of situations you can find yourself in. Then I started to experiment with abstract images, slices of reality as seen from an odd perspective. Old buildings excite me visually, (our friends in the UK, Europe and other wonderfully exotic locales bring out a jealous streak in me, sorry)but unfortunately, here in Nashville we don't have a lot of them left. Nature pics of a different sort interest me(i.e. the frost picture). As of late, unusual subjects catch my eye (mannequins anyone?).
I'm trying to find my "eye" in everything and not pidgeonhole myself into one genre of image. I go through phases where the mood is "go shoot a statue today" or another building today. I am very interested in doing some major photo manipulations such as (forgive me as I'm not sure of the spelling)antoonio has exhibited here.
I guess, I really want to be comfortable is all aspects of this "hobby" regardless of what I'm shooting. I think that is the real secret to being "sucessful" in taking good pictures. I still have a long way to go with it and still don't have a clue as to all of the technical aspects of taking pictures, (I basically shoot and hope for the best, change a setting and shoot again), but I think the number one thing about it is to have fun with it. Whether it's shooting bugs, or people or trees, enjoy it. uh sorry to be so long winded....