on one hand we are disappointed because we expected Jack's death and the Jack/Rebecca love storyline has been beaten to death they are upset because neither of them accomplished what they truly wanted to. they both sacrificed to have a great family that at the end of it they feel so empty inside. Jack didnt start up an auto body shop. Rebecca never sang. But I do think this finale was built for future seasons. especially with the Kate singing/Kevin choosing to take that meeting/Randall adopting storylines put into play. We all know Jack is gonna die at some point. He is already dead. its not a William situation where there was a timeline of death. Maybe its our fault for assuming. Because you know what they say about assumptions. but that fight between Jack and Rebecca and then that Jack speech at the end were fucking great.