While photography can be costly if you choose to explore the variety of available lenses and formats, it doesn't have to be. By following a few composition and lighting guidelines, the simplest of cameras can allow you to create interesting and attractive images. Exhibition quality photographs have been taken using a pinhole camera constructed from a cereal box!
Certainly an artistic flair can be a valuable asset, but anyone who learns a few basics can create excellent photographs. The key is to photograph things that interest you, lending your special point of view to the image, and practice, practice, practice. Even the pros are constantly learning from their mistakes.