"...All of that is irrelevant though, as our sons finally arrived healthy, happy, and ready to receive the love that mother, father, and sister had been waiting so long to share.
So that is the story of our family, a family of which I am tremendously proud. Our particular story may be uncommon, but family development in which members do not share a common genetic history is not. Families of differing genetic backgrounds are created every day through varied means: adoption, foster care, second marriages/relationships, donor gametes, and surrogacy. And each and every one of these families is valid. We have one child who shares our DNA and two who do not; but make no mistake, they are all our children."
I've never really thought of even the "natural" ways that families become unrelated genetically to each other. But it doesn't make any difference in the world to the love those families share. The bond that ties deeper than any other on this earth is simply that...love (not genetics).