This isn't going to be a bash each other thread. Please? I had this thought, and I wanted to share it.
Our time with Lost has been like a whirlwind romance. Our mysterious stranger swept us off our feet, wined us, dined us, shown us new heights of passion and wonderment. Then, we had our last date, only to be told it was a lie, there was another, all that we shared doesn't really matter anymore. In fact, it never did, really. But we shouldn't be mad about the time and emotion we committed to the lie, we should be happy for the fun we had.
That's why people are mad.We've been used, in the sense that we didn't get what was promised from the beginning. It's not that we didn't get answers. Not entirely. The root of the problem is we felt lied to. And the loophole of them not saying the flash sideways wasn't purgatory doesn't really cut it, either. They voided the idea of purgatory before the flash-sideways existed. It was more that they presented the show as something it wasn't. Or, they changed it on us at the very end. Neither of those two options are good things, and I don't see any other options.