Being unhappy for a few months so you can be happy and have certain qualifications seems like the worthy tradeoff than taking a break and risking never returning to school. You have your entire life to find yourself and be happy. The lesson learned was to balance education while being a good person and keeping your life in focus and in shape. Education allowed the parents to get where they are but it was bad parenting that caused all of the problems. Woo Joo bailing on his education kind of flies in the face of what the show was showing us. Being educated is important and while not everything you learn in school is relevant to your daily life, the certification you get from completing school sets you up to live your life. The theme I got out of the story was that while education is important, it should not be the only factor parents care about when it comes to their children.
Woo Joo's decision to travel was the biggest and probably the only mistake the series made.
Happy for Professor Cha and I liked how their family was more of the focus of this episode. I think the end showed that the coach is still out there after some time has passed which is a decent ending at best. There was no amazing twist at the end but more closure. Episode 19 was the true finale in my eyes. Felt more like a drawn-out epilogue than an actual final episode.