For me at least, the true point is control. Specifically, the loss of control once the device is locked in place. The knowledge that at the most intimate level I am now under the control of another for an indefinate period is the major attraction. The knowledge that, like it or not my behaviours, attitudes, desires & needs will change as denial takes hold. I know this will happen. I fight against it but I know it's futile and that turns me on. Nothing else involves the same sort of long term control. Knowing that I will soon crave orgasms that I cannot have. Knowing that I'll endure the frustration, the discomfort, the desperation and that I will soon grow to accept, even desire them is arousing. Feeling the reawakening of suppressed desires, the lifting of taboos, the acceptance of thing that I otherwise wouldn't accept. Waiting for that first milking, tied, helpless, chaste and scared. Scared not of what She will do but scared because I know I will enjoy it. Scared because it marks the turning point. That stage where acceptance becomes desire.... Standing bent over the table, waiting for Her first thrust. Feeling the table dig in to my thighs as She takes me. Knowing my knees will buckle as she forces my orgasm from me, taking the last shred of self control away. Surrender. Desiring, wanting, needing chastity.... That's the point..for me at least.