Blood ties, it turns out are important, when it comes to the raising of children. Who knew?
Blood is not the reason. Being real parents is the cause.
Maybe, but not essential. Commitment is. If you can't have that without blood ties, so be it. Many do. Our Creator gives us opportunities, we do with them what we will. His help is there, for the asking. It is a question of putting ego aside and giving of yourself, and not giving up.