I feel like Go Ji-yong's side is missing the core point

Ultimately, the core issue seems to be that child support wasn't paid...
It looks like the other party refused to let the children see him because he wasn't paying child support.
I've also been through a divorce, and it's truly difficult.
Hiding my own feelings deep down to only say good things about their father and making sure they see him often.
From a custodial parent's perspective, it's not exactly pleasant when I carry the entire burden of raising the children, while the other party just shows up for visitation and pretends to be a great parent, haha.
But... even though I hate the children's father, the children have a right to see him.
If it were up to me, I'd cut all ties and just live happily with my kids, but you can't sever the ties of blood, so... T_T
Divorce is truly a decision where no one comes out happy, haha.
Just as marriage isn't the end, divorce isn't the end either—not when there are children involved.