So, the difference is that in one world there are many people, rather than one person, suffering horribly. How on Earth can this difference make the former world better than the latter?!
Suppose I publicly endorse a moral theory which implies that the more headaches someone has, the better the world becomes. Suppose someone asks me to explain my rationale for claiming that a world that contains more headaches is better. Suppose I reply by saying, “Because in this world, more people suffer headaches.”
So, the difference is that in one world there are many people, rather than one person, suffering horribly. How on Earth can this difference make the former world better than the latter?!
Because it doesn’t contain anyone else. There’s only one human left and they’re “suffering horribly”.
Suppose I publicly endorse a moral theory which implies that the more headaches someone has, the better the world becomes. Suppose someone asks me to explain my rationale for claiming that a world that contains more headaches is better. Suppose I reply by saying, “Because in this world, more people suffer headaches.”
What would you conclude about my sanity?
Most people value humanity’s continued existence.