Help ! i what is the very interesting part of the story of< full metal alchemist <yuu hakusho <Kyo Kara Maoh

PLEASE READ THIS ALL . i have seen many time when i search in internet for anime that FMA and the other animes are one of the best anime but still i dont know why? i have readed the story of them and i cant see anything very interesting in them so i was wondering mybe in later time < i mean next episodes somthing very interesting well gonna happen that makes watch all of episodes of those animes anime << and about yuu hakusho and Kyo Kara Maoh , is the main character of it have something evil inside them like naruto and bleach ? tell me about this anime too. and thanks to everyone < if you know just one of them its okay just tell me >