There are significant cross-generational relationships that gamete donation has engendered that haven't yet been talked about. As donor conceived people and their donors (aka biological mothers and fathers) are finding each other more regularly through the Donor Sibling Registry and through DNA testing websites, there are members of a third generation that are also connecting- the grandparents.
Parental rights issues -- such as that of Sheena and Tiara Yates -- should never be decided based on the rights of one (or two) parents versus another parent with the omission of the rights of the child to know their genetic heritage. Children are not property and decisions concerning their lives must not ignore their needs and rights.
Outside of Hollywood, what happens when large groups of donor siblings search and find one another? While incorporating the reality of one or two new family members into your life seems daunting, the possibility of encountering twenty, fifty, one hundred, or even more is probably downright frightening.