Regardless of whether “natural” is the right term, non-adopted people are encouraged and even praised for exploring their heredity while adoptees are discouraged or condemned. I also think there is a difference between exploring heredity and making contact. For example, my birth mother has denied contact with me. But, if I had access to my origins, I could still explore my roots, find out where “my people” came from, etc. — all without contacting her or her immediate family. I don’t see why I should be denied that oppportunity just because I happen to be adopted.