Not saying I think anyone is expendable, or whatever. [He actually kind of is, because he doesn't think any of you are real, but you know. In theory. If you all were real.]

Just that most of us don't have the energy to worry about every single person who's ever been here and disappeared - even if it was possible to keep track of them all, which I doubt. Personally, I'd rather move on and focus on how to get the hell home.