And in terms of unbirth
specifically, it is a kind of "ultimate intimacy." You (in this case the prey) are
literally completely surrounded by your partner (the pred) and no matter where you turn or look, there she is, embracing you with basically her entire body. That's why I absolutely freaking
hate it when a game has unbirth vore but
only in a fatal manner. It's so mindlessly stupid and ruins the entire appeal of it compared to others types of vore!
...But admittedly, that last part is just my own opinion. (Still really stupid though, if you ask me...

) So that would be
one way in which vore appeals to people. Of course, there is also the classic "power play" aspect of vore. It doesn't get much more literal in a dom/sub relationship than the sub being
eaten by the dom.
-Mal