Nothing is more satisfying than watching a drama with a happy ending. You just know that the time spent watching it was all worth it. lol I am so happy that Oh Soo Jae got her own happy ending with Gong Chan/Kim Dong Gu and is trying to live with full responsibility of her life. Whatever decisions that she'll choose now and in the future, it will no longer be because of revenge now that everything is over with the greatest villain of her life, Choi Tae Guk.
Speaking of Choi Tae Guk, dang.. that old man really is the definition of a prideful man. He hates to lose and face consequences for his evil doings. He didn't see it embarrassing nor wrong in the first place so his downfall became more pitiful. He'd rather take his own life than to 'lose' against Oh Soo Jae, his mortal enemy. Choi Tae Guk loves his family and wanted to only protect them whatever it takes as the father, I actually admire him for that but not the way how does it, however... this admiration came to an end after he ended his life and make his children/family face the results of his own mistakes. It's saddening, really.