At one point I was convinced it was going to be the greatest show ever. Then the last season came.
Now, I was a mega fanatic, listened to the podcasts, visited all the sites, investigated all the mysteries (wish I had poured that energy into Lego back then).
But the show creators stopped caring about answering the mysteries. And in their podcast years earlier they said that it was not all a religious purgatory but it was...those other people had died and were waiting for Jack to die so they could complete their ascension into whatever heaven or such that they were going to. Bogus, stupid, religious ending. Like everything Lindelof touches, it ends up being about religion, see Prometheus (Jesus was an engineer, google it). I refuse to watch the Leftovers because I know it will be all about god.
And the thing about pulling the cork in the cave...really dumb.
It peaked with all the Faraday time travel stuff but then just unravelled completely.