I consider myself spiritual but not religious, because I do not believe in organized religion, which I think is inherently corrupt. I have my own strong, independent beliefs about the nature of god (I prefer "goddess") and the universe. These beliefs are very important to me.
l suppose I would be "religious," if I think of my beliefs as my own religion - but I dislike that term. Perhaps I associate "religion" too much with the Roman Catholicism of my youth, which I totally reject!