The worst ending

The ending really left me depressed. It was a great drama what was the rush to just finish it and ruin it. I mean a two three weeks delay would've been okay so that we could finally have an amazing ending. Currently this drama has had the worst ending I've ever seen in my entire life and yet i was so in love with it, did you really had to ruin it in the end. Even the ending of game of thrones didn't depress me this much. The entire series was on a rate of 8+ but the ending has a rating of 1 or less