Don't know if I count in on this discussion, but tossing in my two cents from the flip side of the coin.

I like the idea of necrophilia also because of the lack of control and the inability to say no, but from a submissive stance. I like the idea of being used even when I'm gone (preferably tortured/gutted beforehand) and then being tossed when I go cold. I like the idea of total and complete submission to another person, the fact they can use my body and even if I want to say no/stop, I can't.

All in good fantasy of course.