For me, I have to say Jane the Virgin. Now, granted, I don't have everything about how it ended at all, but what they did to Michael was SO disappointing. 

Ozark.  The rich white people get people murdered and face ZERO repercussions???  None whatsoever?  Jonah forgives his mom for killing his uncle because of a car crash?  The car crash brings the family back together somehow???? WTF Bateman? 

Stuck between Gossip Girl making Dan GG and Pretty little liars. Spencer’s twin? Really? 

Most recently, Ozark. Absolutely atrocious ending. 

I’ll never forgive Seinfeld for ending with what was essentially an extended clip show. 

I'll state the obvious because someone has to: Lost and Dexter. Unforgivable!!

Game of Thrones aside (we ALL hated that ending), what TV show ending were you most disappointed with, whether because of the execution or because of the plot decisions made?

What TV series ending disappointed you the most?