> Like, do you think I'd argue that any of the previous mass extinctions were good
Without the most recent one, mammals and thus humans wouldn't have flourished... So yes. If you conversely care about those people dying, then you should be celebrating the comet that killed the dinosaurs
Could you explain why I "should" be celebrating that? There's no logical sequence leading from "caring about people & animals dying" to "one should think that previous mass extinctions were good".
The current mass extinction was in no way inevitable, it is caused by humans. We can still have an unknowably large impact on the number of lives lost. I don't know why we should pretend otherwise.
Without the most recent one, mammals and thus humans wouldn't have flourished... So yes. If you conversely care about those people dying, then you should be celebrating the comet that killed the dinosaurs