Storm-dono:
Not trying to offend anyone, but some of you need to learn the definition between the word "like" and the actual "quality" of the drama you watch. I am not saying that the Goblin is perfection, it's far from that word but to say that the Goblin is the worst drama you have ever watched tells me that you are ether a complete newbie or you don't have a clue. I agree that the story was the poorest aspect of that particular drama and I understand that you drop something because you don't like genre or it just doesn't click with you or maybe someone like me who avoids triangles+ but that doesn't mean that the drama is bad. That's just our personal preference not the actual quality. Sorry to the owner of the topic for going off-topic. Not gonna do it again.
Personally I like Goblin, the story, the cinematography, music, actors, etc. But you also have to understand some people just don't think Goblin has those aspects that you find "quality". They probably don't find it as visually stunning or has the best cinematography as you do so it affects their overall impression of the show. Those who think Goblin is the worst show might love “Scarlet Heart: Goryeo” because of the costumes, music, the background, actors, the beautiful shots, story, etc. so their overall impression is that it's a "quality" show.
Both Goblin and “Scarlet Heart: Goryeo” are both considered 2 of the best cinematography in kdrama.