This is what I think. Not trying to be rude here.
Sometimes people have no choice. Sometimes people have limited options and few opportunities. Sometimes people have obligations and can't choose the exact path they wish to take. To some of us the idea of "life is all about choices" is an outrageous and annoying oversimplification. The meaning of life is far more complex than just making this choice and that.
I can see how you might disagree, and, really, no one needs to share my opinion if they disagree.
I can't say it any better. People seem to underestimate the psychological and social constraints that bind an individual, and the impacts that different encounters at different points in one's life may have on that person. They always say "oh, you have a choice" but does that person really have a choice?
A lot of people here compare Taemin with Jiwook, saying Taemin had a much more difficult childhood but turned out a much better person. But things are not that simple. Tarmin's circumstances reinforced his ego and his wish to become stronger so that he could overpower the bad guys and protect those who are weaker or important to him. Jiwook's circumstances, on the other hand, diminished his self-confidence, leaving him with a sense of helplessness and fear that his place in family/society will be taken away from him and he will disappear.
I'm not saying that the individual is not to blame for the actions they have taken, but saying that they had a choice, and comparing different personalities and circumstances is an oversimplification of reality. The way I see it, people should not be regarded as mere victims of circumstances, nor should they take the entire blame under the outrageous assumption that they are always free to choose.
Life is all about choices. It is a big choose-your-own-adventure book with multiple possible endings,except we cannot go back once we choose one path. So to say Jiwook does not deserve the hate is wrong. He choose to be the asshole and hurt his brother even though his brother seemed concerned and reach out to him. Take a look at Taemin. His father beat him,his mother abandoned him,he lived in poverty. Yet he does not choose to be ass.