How does my gay marriage hurt you?

Ryan Anderson  (in response to this question from the Deseret News)

Same gender marriage defines men and women as exchangeable units, and requires that Government institutionally endorse and promote that uniformity, making gender complementary obsolete - especially for children. This definition removes from the law a child’s right to have a father and a mother, and denies the indispensable functions that mothering and fathering provide. Removing gender requirements from marriage further threatens all gender based rights affecting alimony, presumption of paternity, custody battles,  the draft during war time, even privacy in public locker rooms, restrooms and showers, all of which depend on the recognition of our unique gender needs.

Ryan Anderson is the William E. Simon Fellow at the Heritage Foundation and the editor of Public Discourse: Ethics, Law, and the Common Good, the online journal of the Witherspoon Institute.
According to the foundation's website, Anderson has expertise in bioethics and natural law theory and researches and writes about marriage and religious liberty. His current focus is on constitutional questions surrounding same-sex marriage, the foundation said, and he co-authored the book “What Is Marriage? Man and Woman: A Defense” with Princeton’s Robert P. George and Sherif Girgis.