Someone once asked me, if the adoptive family was a good one, what’s the issue ?
People not affected by adoption often struggle to understand what would motivate an adoptee to go searching for their original family. If one knows where they came from, it can be hard to relate to not knowing.
An adoptee that grows up in a loving, supportive family, will be strong enough to search for who they came from. If their adoptive family was a very good one, they might even expect that they would not like what their search found once they arrive there.
Maybe it would help to understand that this kind of experience was never intended to replace the adoptive family the adoptee grew up in. Yet any adoptee will feel that they have a few “missing” pieces. It is only natural. And once a puzzle has been revealed, completing it makes sense.