I don't. Just because you had a crappy childhood doesn't give you the right to treat others badly.
You can feel bad for someone and still hold them accountable for their actions, you know. And not feeling bad for a child that has been treated THIS badly is even more questionable, btw.
It's okay if you don't feel bad for him. I understand that what he did to others wasn't good and I don't support it either. But his childhood was really traumatic. Being called a monster by your own mother and then getting abandoned. Being told to keep quiet about his own father. Was forced to stay alone when he was just a kid in that big mansion..... Idk if it's anything else other than traumatic.
Read the book called the child called it once you read that book you'll see everything you said isn't true. He chooses to be an ah he didn't have to be he chooses to treat people rudely. He could of gotten help any time but he chooses not too.
A small summary "Brutally beaten and starved by his emotionally unstable, alcoholic mother - Dave became a slave; he was no longer a boy, but an 'it'.
His bed was an old army cot in the basement, his clothes were torn and unwashed, and when he was allowed the luxury of food it was scraps from the dog's bowl. The outside world knew nothing of the nightmare played out behind closed doors."
I feel so bad for Seonwoo