i agree with gem about the journey through the mind being the most intense part of the Dom/sub relationship. it is the psychology of the lifestyle that draws me to it, and an experienced Dom/me knows that the mind is the largest sex organ of the body.
i also agree that there is a definite difference between being equals and a person's place in the heirarchy. i CHOOSE to put myself lower in the heirarchy, not because i think i'm less worthy, but because it makes me feel good to be there.