Psychology of Bondage

A vanilla author explores the BDSM subculture:

I suppose this was in part to the fact that human beings often tend to crave and desire the very things we cannot have, which is a part of the fascination. This idea is a key component of bondage and domination lifestyles as well, as this dynamic can create a powerful rush of emotion and arousal. For instance, a man or woman may be erotically bound by leather straps or ropes so they cannot touch their lover or please themselves in any way, all the while, their Dominant or Master titillates them with gentle touches or a firm hand.

BDSM Lifestyles: A World of Sensual Etiquette and Restraint