This is like eternal question of many debates. To tell the truth or hide it? Some parents evade that question out of fear of losing their adopted children. Each and one of us would have that need to know who your biological parents are. The worst part would be for adoptive parents if your children make the connection with the biological one. There is always a possibility of losing them one day. I think that is the major reason why people don´t tell their adopted children about their origins. I think that is fair because the biological ones left those kids and shouldn´t get a chance of having them back. That should be the definitive punishment for irresponsible parents.