One interesting thing I've learned: live an ordinary life long enough, and you're a veteran full of old war stories, by definition.

I'm generally the one adding Chinese history with spoiler warnings or loading up video-game pages with details on medieval history.

That, and writing defenses of [[Characters/OrderOfTheStick Miko Miyazaki]]; the spirit of "the forces of light in hardcore mode," the question of how to avert GoodIsDumb and CloudCuckooLander, strikes me as very interesting. (I'm the author of the index KnightInShiningTropes; feel free to enhance it.)