I know Im surely about the 63th person to tell this but probably Naruto Shippuden. I know it is not the best anime, but Ive startedwatching it since I was a little kid and finished it as a yound adult. Therefore I always get so nostalgic talking about it. The life lessons you can learn are pretty solid in my eyes. The only 3animes, besides Naruto,I would consider perfect are Fullmetal Alchemist Brotherhood, Code Geass and Attack on Titan.