There are also legal implications that become involved here. Most of the time, the parents adopting are unknown to the parents that are giving up the child unless they are already closely related. Parents, even adoptive parents should know when to let their children know about the history. That is, when the child can handle understanding that the things that took place were for their better interest and care.

 No it's not always fair, but realistically it is sometimes necessary, and in the best interest of the child. A lot of states seal adoption records, and they can be opened only in extreme cases. I have nieces and nephews that are adopted, and have both found their biological parents through their own investigations. It cannot be considered criminal to want what is best for your children. There are a lot of adoption sites that one can visit and enter a birth date to look for a biological parent. If one wants to find their parents it can be done without adoption records.