Bondage for several reasons. Firstly is the incapacitation and total vulnerabilty of ones object of desire. Done well it pronounces those delectable areas of the female anatomy (not that any part is not delectable)The aesthetics of Japanese rope bondage are a delight to the eye, it's a beautiful erotic art form (apparently a master has to serve a seven year apprenticeship). One can induce pain and discomfort which a sub has to deal with and send her into space while one has time to study the complexities of her facial expressions (big erotic turn on for me) as she goes on her journey.

I'm going to Japan this summer and hope to see a master in action. That is going to be a great thrill.