Everyone of the series' episodes ended with the screen going to black. All the episodes ended with viewers wondering what would happen to those in the episode and what would happen next episode. So, why all the lamentations about the finale? It's fiction. You can make up your own ending. Tony dies. Good. That's a good ending. Try that one. It'll live in your memory forever. If you get tired of it, change it. There's a million possibilities.