All right, real talk: When's the last time you heard a parent refer to their kid as their "whoops, we forgot to use protection" child? What about their "it took a lot of help from doctors to make this happen" child?
No one talks like that! (OK, other than in a Judd Apatow comedy.) They'd sound ridiculous. Your kids are your kids — regardless of how they became a part of your family. Why do we so often forget to apply that understanding to children who've been adopted?