Good story, could be shorter because the principal character still playing but they made the story in an large amount of episodes. I think this way because the story hasn't ended.
Good casting. Every single character was important and tells important passages from the main character's life.
Very energetic from the beginning, no complaints about how the story describe the childhood moments and you can understand his feelings and thoughts.
I'm my opinion, the drug uses were necessary to explain the main character was internal suffering but I have some many questions without answer about. I think they could resolved in a smooth way what happened with the drug and alcohol abuse.
There are so many important characters that the show never talked and only at the end you can see them participating of the story.
But in general, good show to spend and nice and quiet moment.