Lots of anal-retentive nitpicking here. Bobo has pretty much summed it all up, as far as the island's "mysteries". I honestly cannot believe anyone, anywhere, thought that the finale would suddenly tie-up ever-lasting-doubt about every speck of sand on the island. That's ridiculous. A show that ran for six years, numerous different writers, actors coming and going, strikes, etc. Did people
honestly believe that there was some super-permanent, primal plan to the whole series and every single act that has occurred?

C'mon!! If you thought we would get all the answers about everything in one show, then you simply never got the show itself, or television in general.
"But, the creators swore--"
Yeah, and Clinton swore he never had sex with that fugly temp, and Bush swore there were WMD's in Iraq. Life is full of lies, and television never more so.
If you didn't like the ending, I get it. I'm certain there are lots of people out there that feel that way. However, if your only gripe is that it didn't answer all your questions, or was confusing....fuck, what show have you been watching?
It's LOST! It gave us the only answer possible. For those that take it as face-value, and never invested any deeper thought into the show itself, then I'm sure you're angry your favorite science ficition television show didn't end with aliens or immortals. But, as for LOST, and the ones who watched it for what the show was about (the characters), then you should feel about as satisfied as Jack did in those last moments as he died...