I think for me it’s a matter of being slightly aware of the war when it was still ongoing is why I find it interesting…and sad. I have vague memories of being in the car on the way home from my grandparents’ house. It was about an hour drive. I remember hearing them talking about it on the radio and my parents discussing it. Plus knowing people who fought. One of our moderators, Cajun, fought in Vietnam.
What you mentioned is interesting to me. I think “the cause” is one of the main aspects of why something is a bummer or uplifting. To me, it’s an important reminder that war should always be the very last resort. Our military is amazing and made up of people like Ranger, Aloha, Cajun, and on and on. Wasting people’s lives, health (both physical and mental) is not something to take lightly. we have a lot of arm chair generals who are always so cavalier about going to “take them out” without understanding what that really entails.
I think WWII and maybe Afghanistan were the last truly “necessary” wars. I’m sure people have far different opinions than me, but I think that’s why WWII is seen as “uplifting”. We defeated the most evil regime, possibly in human history. At least in the Western Hemisphere.