This type of drama is much more of a trigger to me than Tomorrow. THIS is depression, in its sutil and real way. And it's life, folks. That being said, it’s not my favorite kind of drama. I have to be mentally prepared to watch it. I like dramas to forget about life and have a pleasant time, but nevertheless, watching this is good for self reflection, but I wouldn’t rewatch it :)

I also think they did take alcoholism and depression lightly (the second one being almost a trait of someone's personality).
One really good point is that although the story doesn't have much speed, I ate this up in two days, which means the pace is quite good (great job of writing and directing).

And beware: if you don't like realistic characters, don't watch this.