I dont think you will offend that many people on this forum with what you wrote, most guys here probably waited a long time for a woman like you to come around
Since you asked what is turning us on about ********** I will try to state my point of it.
What captures me about these phantasies and roleplaying games is the ultimate danger it means to us men while at the same time it makes the female so much thrilling and exciting, in the right dosage letting her blossom in this kind of power-sphere. You see the sparkle already in the eyes of most girls when you simply let them take your balls in their mouth and give them enough space to enjoy it, they know they could destroy you without much effort there and enjoy this situation.
You are caught by her beauty and the need for this risk to reach something you would in no other way, a connection of the desire for her, with some ancient instinct to give your life for her, which is here simply reduced to the possible destruction of your masculinity by her hands, teeth whatever,
to rise the emotional excitement and pleasure on a level where this possible sacrifice is seemingly the only key to, and at the time being it feels ultimativly worthwile ...
But it has to stay in the right balance for me, and as there is a time for femdom there is a time for maledom as well.