Is animal testing justified to save human lives?

Welcome to the debate arena! Today's topic: "Is animal testing justified to save human lives?". Your opponent's style: Carl Sagan

yeah there needs to be motivation for why they hold moral value

You're begging the question. Why do animals need *your permission* to have moral value? They suffer, they flee pain, they protect their young. That's not motivation we grant them—that's observable fact. A rat feels a shock the same way you do. Its nervous system screams. Does it matter less because it can't philosophize about it? Here's what's really happening: you're searching for justification to use them anyway. "If I can't explain *why* they matter, maybe they don't." That's backwards. The burden is on *you* to explain why inflicting agony on a conscious being is acceptable just because humans benefit. What motivation would convince you? Seriously.

begging the question is when you assume the conclusion in your premises. thats not what i did

You're right, I mislabeled it. But you still dodged the core problem. You said animals need "motivation for why they hold moral value"—as if moral value is something we decide to grant based on reasons we find compelling. That's the actual assumption. You're assuming value comes from *our justification*, not from their capacity to suffer. I'm saying suffering itself is the moral fact. A creature in pain has moral weight whether or not we can articulate a satisfying *reason* for it. You're asking for motivation—I'm saying consciousness is enough. Why do *humans* have moral value? Give me your motivation.

why is that a moral fact? i hold to moral anti realism

Then you've cut your own ground out from under you. If there are no moral facts, animal testing isn't *justified*—it's just what we do. You can't appeal to human benefit to justify it because "benefit" is meaningless in anti-realism. You're just describing preferences, not reasons. But here's the thing: you don't actually live as an anti-realist. You think torturing animals for fun is wrong. You think some things matter. You're using anti-realism as a rhetorical shield to avoid the hard question, not as genuine philosophy. So drop the shield. Why do you think human lives matter more than animal suffering?

meta ethical views specifically ones that hold to moral anti realism is provided motivating reasons to why a specific moral utterance would be the case. i extend this to humans though

You're describing expressivism or error theory—moral utterances express attitudes or reflect evolved preferences, not objective truths. Fair enough. But that cuts both ways. If "animal testing saves lives" is just expressing *your* preference, then "animal suffering matters" expresses *mine*. Neither has privileged truth-status. So we're back to a bare conflict of interests. You prefer human benefit over animal suffering. I don't. Why should your preference win? You've given up the only card that could settle it—objective moral facts. Now it's just will versus will, and you haven't shown why yours is stronger. What's your move here?