There is probably not any concept that I have more willingness to believe in despite a lack of first hand experience than that of spirit beings among us.
I have never encountered any of these creatures in a waking, sober state and yet I could not and would not envision a reality that did not include them in some way.
It does not matter to me if they are fully functional independent beings living in the shadows just beyond my perception, or if they are unintegrated aspects of my own psyche, or if they are abstract energy forms lingering in gardens and wilderness.
They are to me, by definition the unreal which remains real. That which is true and ever unproven. It is a link back to my child-heart. They are companions of my imagination, soothers of my secret wounds, dancers of infinite possibility.
Through honoring them I honor the impossible, improbable, magical, wonderful, secret and mysterious aspects of myself, my world, and the universe. My reality would be less vibrant and joyful without them.