Hi, I am a long time lurker of this board but a first time poster and thought I would throw in my two-cents. I understand that’s it’s hard to fathom and agree with you when it comes to child John/Jane Does but I think for many adult John/Jane Does when there are issues of abuse, mental illness, drugs or dysfunction in families the circumstances under which they left were likely not very positive and there wasn’t the desire for either party to keep in touch. Unfortunately, not everyone who is estranged from family is in search of a happy reunion. Even if an adult is reported missing and the police do find them, they don’t have to tell the family of the person’s whereabouts only that they have been found. If the person does not contact family, their family may still keep searching for them but would likely be hesitant to report them missing again.