Loss of control and freedom; I like the feeling of being "stored" --tied down, gagged, and left for undetermined amounts of time. A blindfold or full hood allows that time to seem much longer. It's an incredible turn on right at first, then subsides--then after about an hour or two, I get extremely turned on and compelled to struggle. The sudden sound of my domme walking around, doing things in the room and totally ignoring me intensifies the feelings. Anal and/or nipple play is good too, and just makes the feeling of being used and abused that much more of a turn on.