Certain bits of gear are beneficial under certain situations. If you want to do Macro, then you will greatly benefit from macro gear. Want to do long exposure?, then a camera with no Bulb setting, and a slowest shutter speed of 1 sec, is probably not the one you want.

Unless you are into gear for the sake of gear, then buy a decent all around cam, find your vision, and then get what you need to achieve that.