People idolize over Haruhi Suzymiya because she acts like a guy. You ever wish you could have a girl as a friend, just to hang out with like one of the guys? A girl that would have the same interests as you, the same enthusiasm, the same keen observations and sense of adventure? How about a girlfriend that you could just hang out with, have fun with, and not have to listen to her whine and complain and leak. Haruhi Suzymiya is that ideal "hang out with" girl. She has fans because she has all the best traits of a guy friend you can hang out with, only she happens to be a girl. Understand that when people idolize over Haruhi Suzymiya, they idolize over the personality of a cool guy friend in a girl's body- an ideal friend/partner who has the best of both worlds, and would be nearly impossible to find.