would be all about your pleasure at that point.No pillow talk afterward

For me, I prefer unconscious girls to dead ones, they are warmer, and reusable, the dead ones are cold (unless very freshly dead) and have a rather short shelf-life in spite of advances in preservation technology.
Knocking out girls is how I "play" out this kind fantasy (being dead) with those who are into it, sometimes; sometimes they just play dead.
Complete control and complete submission, are the name of the game, I love to play with, (abuse, fuck, and a whole lot more) a woman's body, tie it up, pose it, position it, dress it, make it up, big into human dollification and objectification.
Still a freshly dead corpse while not being reusable, is eminently good for a number of hours, and the surrender & submission of death is ultimate..

I read too many detective mags as a young skull full of mush. And the fantasy of having total control of a sexy female back when I had no social skills.

But mostly Die_mensch is correct, the ULTIMATE cheap date. Maybe turn a profit if she has anything in her purse.

The turn on for me is the fact that she cannot resist, and has relinquished any power that she had. I have total power in the situation. I like her to have died in a way that has preserved her beauty, so I can take a little while to enjoy lookling at her naked body, before caressing it, posing it, preparing it for a last act of love. I like the thought of kissing her lips and feeling no response, before I make love to her body in an act of selfish indulgence

For me I guess it's not so much control as simply the fact that she's dead. Or maybe the sense of violation; since she can't fight back or even say no, it's a form of rape. As for afterward, I would either leave her somewhere to be discovered or else just toss her in a trash bin.

For me its the joke of existence. Yes she was pretty, maybe even kind and good and loved by many. But if she is dead, she is an object. A decomposing useless dead piece of cosmic debris. Sure, within our society we build up the idea of the soul and all sorts of sentimentality about a dead body. We also build up the importance of ourselves. But ultimately if I am fantasizing about fucking a dead body, I'm fucking the ridiculousness and futility of existence. My dick gets hard at the thought of a jiggling useless sexy cold body, and part of me is laughing at the very concept of the importance of life. And yes, she's submissive and sexy and a doll and moveable and so so so fine to play with.