Should all tv series have a five season life span?
Look, no matter how you look at it, the ending was poor. The ONLY time i can think of a satisfying ending was Battlestar Galactica and that was series that quit on its own terms.
Let's be honest, Castle was jumping the shark for a while and whilst we all like more of something we love, it does leave you with scenarios like this where a show lets cancelled and you're either left in limbo or get a hastily tacked on ending that doesn't do the show justice.
Perhaps all shows should have that 5 years shelf life so you don't go round in circles or scratch around aimlessly going nowhere... which is what Castle has been doing lately..
Me? I'd have stopped after the wedding. I wouldn't have had the final shoot out and I'd given each character their send off/ending. Let's not forget Castle is an ensemble piece and the show worked because we loved all of the characters not just the leads.
7 years and you end it like that?
No, thank you.