So why upvote that quote?

• Because it has Nobby at his best.
• It is about cutting through bullshit. Ruthlessly. It takes a slogan "War. What is it good for? Absolutely nothing." and utterly tears it to shreds. Because it is obviously and overwhelmingly wrong for the kind of reasons we have all sorts of posts about here.
• It's exactly the response I would make if someone tried the "What is it good for?" rhetorical question on me. Come to think of it I have used the same response.
• If something is transparently and obviously contradicted without even having to make two inferential leaps then politics hasn't even had a chance to kill your mind.
• Naive pacifists are annoying. (And dangerous.)
• It is a necessary counter to that obnoxious 'never ever never nerr nerr bullet' quote that somehow became popular here.

but downvote this one?

I upvoted (or rather countered one downvote) on this one.