What's Up - The ending was just unsatisfying.
When I was still an active drama watcher I was always looking forward to the last episode of a drama. I wanted to get done with it and move on, on the other hand the last episode always represented a definite end and I was afraid of putting an end to such an enjoyable time, leaving characters behind who had accompanied me for a couple of days/weeks/months and who I felt familiar with.
Still, I don't want any of my favourite stories to be continued - for apparent reasons.