Just like you, I too have fantasies. One of My very favorite ones involves keeping a person prisoner. I want them to become so dependent on Me that even when the time comes for Me to release them from their place of captivity they stay put, unable to function without My unloving guidance. It makes Me grin and My heart skip a beat every time I think of it.
I would keep them in a continual state of sensory deprivation for the first week. Feeding them intravenously instead of orally. The second week I would allow them to hear my voice. They would also feel the sharp pain of any number of My instruments that I have to inflict orgasmic pain. I want them to be conditioned to crave the pain so they can feel the pleasure.
After a few months, they would be brought out into the light. They would be placed in unfamiliar surroundings, with vague instructions, tethered to the wall to accomplish the impossible task. If not done properly, then no pleasure will be had, only body wracking pain. They will learn to please Me, learn how to get what they desire. They will become so addicted that I could beat them mercilessly hour on end and still they would be curled up by My feet craving even more.
I am not sure I will ever fully realize this fantasy of Mine, but it does not matter. Just the simple thought of this fantasy causes Me great joy and makes wonderful self stimulation fodder.