Let me preface this rant by ssaying that I'm still watching the show.
I really enjoyed the original premise of this show. What if vampires have always existed, and were able to reveal themselves because they developed a synthetic food source? The idea of vampires living openly in OUR world is fascinating. The shifter was a bit much. Then they added demons, and werewolves, and were-panthers, then fairieis, and witches. All of a sudden the show has no resembalance to the real world. It might as well take place in Harry Potter's universe. By season five every character on the show is going to be supernatural.