There's just something about it that hooks you on.
Sure, the characters are oblivious and sometimes it's so frustrating I want to tear my hair out but it's an AMAZING show. The concept of a two person love square is just... AWESOME.
The secret identities are really cool but kinda scary because there are so many possibilities. And the Agrestes are just plain messed up.
I hope to see more character development in season 4 (long overdue). The point is, I'm here for the music!