I can't believe all the people who are hung up on these so called "big questions". What big questions? What is the island? Who cares!!! It was never about that, yeah it was cool having all these crazy mysteries but that's not what lost was at it's core. Why do you think they spent so much time developing these characters with flashback and flashforwards?!?! Because the show was always about there journey of being lost and finding their purpose. If you don't get that then I just feel bad for you that you felt like you wasted your time.