As we all know, the radical (and frankly mentally troubled political left) cares not a wit about kids or the overwhelming evidence of social science. Their sex life is their religion, and nothing else matters. From the Washington Times:
The Manhattan Declaration was founded in 2009 by Charles Colson, Timothy George and Robert George with the input and support of more than 100 Catholic, Orthodox and evangelical leaders. Its purpose is to articulate Christian values respecting the sanctity of life, marriage and family, and religious liberty, and call signatories to stand firm in their defense. The signers and supporters of the Manhattan Declaration regard these values as foundational to the wellness of American society. To date, more than 535,000 individuals have signed the Declaration.
A primary emphasis of their brief is the centrality of male-female marriage “in nearly every culture throughout history because it encourages and supports responsible procreation and childbearing.” Moreover, “where the marriage culture begins to erode, social pathologies of every sort quickly manifest themselves.” The brief cites numerous academic articles, such as Margaret Somerville, “What About the Children?” in “Divorcing Marriage: Unveiling the Dangers in Canada’s New Social Experiment” (2004), where Professor Somerville shows that “accepting same-sex marriage necessarily means accepting that the societal institution of marriage is intended primarily for the benefit of the partners to the marriage, and only secondarily for the children born into it.”