If the tradition which claims that war may be justified does not also admit that it could be unjustified, the affirmation is not morally serious. A Christian who prepares the case for a justified war without being equally prepared for hte negative case has not soberly weighted the prima facie presumption that any violence is wrong until the case for an exception has been made.
What you want to worship above youth, I think, is beauty, and beauty is so beyond just appearances after a while. Because you can be with someone who's good-looking; if they open their mouths and they're an idiot, then they cease to be beautiful very quickly.