I think Barry is missing a huge part of the equation. As ivory said, no normal parent sees their child as disposable. From my limited perspective, it’s actually quite rare for a child to be kicked out, but when it happens, it’s not because that child is ch”v viewed as disposable, it’s to protect other children from a negative influence.
Because the other children are not disposable.
Lo aleinu that a parent should ever have to deal with such an awful dilemma.