RABBAIM, so it is better to leave nothing for the child who is OTD but hurt,anger, pain, and bitterness? forever?
Perhaps the OTD child will not spend the money on bad things. Fakairt, maybe he or she will spend it on good things because that’s what the parents would have wanted. Or maybe do teshuvah one day! One can never close the door on a child.
We do avairos but Hashem continues to give us air and water and food.