It would be difficult, as a parent, to see the sadness in a child who felt deprived and excluded. I can see that feeling leading to ill-conceived actions out of a desire to protect one's child from that excluded feeling. Life, however, has some harsh lessons for us all. Lessons thrust upon us at times not of our choosing, as who would ever choose such. Desperation and helplessness are difficult feelings to address properly.
I like the parents in here who have found constructive ways to deal with the issue. I'm sure we have parents with other, analogous issues, whether because of child onset diabetes, tumors, cancer, or other physical or metal disabilities or challenges. In the end, sometimes, one simply has to accept that life is not fair.