> This statement is just appealing to emotion and is commonly used in arguments against abortion or attempts to thought police

Your statement itself seems like a fallacy to me.

It makes sense to me that the comment you're replying to is emotional, because it's not meant to be a "proof" but an opinion, and it's valid to have emotional opinions; moreover, it was a reply to a comment which was in itself an emotional appeal!

Self-preservation is not innately good (or bad). Mass extinction events seem to have been good at giving rise to species that are now self-preserving; maybe a new mass extinction would give rise to even "better" species.

As a human, I'd rather we didn't go extinct. I'd rather mankind prospered and even spread out to more planets. But I'm ok with anthropocentric appeals to emotion :)