Been raised by a Stepmother who was in all ways but blood my "real" mother, now raising a step-daughter who I feel is more my daughter than I could have hoped for. So I really don't feel blood matters in the end, its the folk who give it their all to help you grow into this world and prepare for it that really are parents. If I found out that my Dad wasn't biologically that, I still wouldn't care because I know it doesn't matter. He raised me and did a damn fine job of it. 33 Years later, to the day I can say my Dad is the best I could have hoped for.