What the established, well done and replicated research shows is not at all what you represent.  What is ideal is having TWO parents involved in the raising of children - no qualifiers are placed on the sex of those parents.  Children form attachments to any set of parents who love them, take at least good enough care of them, and who the child feels like they will be there when needed.  Perhaps really reading the reliable research would expand your knowledge of what works in the care and development of our kids.