Sawyer killed the polar bear early in season one, and they never found one since then. I’ve never gotten how they stopped caring about the smoke monster, but then again it would be a boring show if all they ever did was sit on the beach and dream of the inland, but just said “nope – that thing might come for us.” Not too realistic either. Let’s face it – humans have always gone romping around in places where there is extreme danger – unexplored lands, the moon, etc. Plus, last week we found out why the smoke monster only appears occasionally 🙂