The finale explained.
Let’s get something right. The island is not purgatory. If you think it is you are missing the point of not just the finale but the whole show.
Christian tells Jack the island and everything that happened on it is real.
The alternate universe was a construct they made when Juliet detonated jughead. They all existed there even the ones who made it off the island on the plane with lapidus, and ben and hurley.Â
If this seems contradictory then let me explain but remember I’m using an analogy that all can understand. I am NOT being literal.Â
Imagine you are dead.Â
As Christian said to Jack when you are dead there is no now.Â
No now equals no time, because of this then everyone you knew or loved would Â be with you because on earth/reality where time does exist everyone dies at some point.
So if you died years before your wife/child/sibling you would still meet them in whatever version of the aftelife you went to.Â
The people on the plane got off the island and lived there lives until the day they died.Â
Hurley and Ben protected the island until they were no longer needed.Â
It wasn’t the best ending they could have come up with but it wasn’t the worst.Â
But the island definetly was not purgatory or limbo.Â