For no good reason? The reason is that he's Kyon and everyone wants him. The SHnY universe runs on this very same principle, after all... just not taken to such extremes.
Well I for one don't like Kyon being that popular since Haruhiverse shouldn't be focusing in romance (like, HaruhixKyon is absolute, Asahina is just for comic relief). But it's just me. Everyone has his own fantasy and we readers should respect it (like Touhou). If we think it's not good then simply don't read.
...actually, I haven't done anything yet...Eh!?In the dvd Taniguchi loaned me, this kind of reaction seemed to make people happy...W-well, here I come, Asakura...Yes...don't tease me ☆Kyon-kun, you're amazing!Am I doing it wrong, maybe...?The Surprise of Ryouko Asakura - Bonus Chapter