The show is pure emotions may be too close to reality and thats why you start hating each character for stupid decisions. Mother role is too stupid who created 50+ episode mess . father is shown too pathetic and that drives a sorry figure for the guy who only followed his principles and did nothing wrong but was troubled at all places.
The most i hated was the character for main female lead who jumped for money , than troubled everyone and mostly cried in all 30 episodes so far . I dont know may be i hate her in particular she had same depressed world against her role in angel last mission too and even there i didnt liked her role.
People make stupid decision and then keep on crying for next all episodes for that which is practically close to how things work in real life. Thats why is said its too close to human nature and hence feels angry for seeing all yet you are hooked to this slow drama which started good and from mid turned to slow melodrama and sad figures .