I'm actually pretty anxious for season five to begin. Where ( or when, if you've seen any previews) is the island? Is Jin alive? Will Jack and Ben succeed in reuniting the Oceanic 6? Is Claire a crackpot? How did Locke die? Or is he dead?
Season four was good, like really good, depending on how much you can suspend your belief in all things realistic. But at the same time, it's tv. If you don't like the mystery or time travel stuff, go watch Scrubs or Desperate Housewives...