[She's finally starting to grasp the original point of the conversation, the reason he'd brought it up in the first place. The question is expected and he's spent a lot of time on his answer himself during their journey.]
My preferences on that aren't the one that matters. Yours are. That's not a choice that should be taken away from anyone and done by force. No matter if it's from human to vampire or vampire to human.
You are who you are because of the things you've experienced. To lose that all again...to start over...
I wouldn't wish that for Yuuki. I've watched you as you've struggled as a human. I've watched you as you've struggled as a vampire.
[The only difference is the level of involvement he's had in her life at each time.]
Do I miss those days? Yes. I was always by your side. But this is who you really are.