Sheesh, people are so damn impatient these days. I tell you in my day if you took drink you had to wait two days to find out if it tasted good.
So they should just wrap up a bunch of the questions so they can end the show? Or start coming up with new, more and more far fetched storylines each season just to keep it going?
IMO, the show does a great job of providing some long-running, show defining questions a la The X-Files Aliens/Gov't conspiracy mystery, some slightly smaller ones that get wrapped up occasionally (e.g. the hatch, the prisoner, Claire's abduction, the tailies, etc.) and some really good weekly character stories (e.g. Locke's saga with his Dad (anyone else notice that the Eastern lady whose house Locke inspected was Sayid's long-lost love?)).
For those who wonder whether they're just making stuff up on the fly, with some falling off the table never to be seen again (e.g. the polar bear), this
Entertainment Weekly article examining the map may offer some reassurance.