That's an awesome deer man,but hey you gotta understand, using another for a humane kill is something you have to do. Don't ever think about you'll be wasting an arrow. You have to do it because it is the right thing to do. I've shot a few deer in the spine, and know what you're talking about. But you immediately have to follow up with the lung shots until it's quickly dispatched. Awesome buck though, and I'm happy everything worked out.