So I'm currently writing an essay for my political science class about the constitutionality of same-sex marriage. So far, I'm citing evidence from the fourteenth amendment (equality), the fourth amendment (right to privacy), the Supreme Court's ruling on California's Prop 8, and the Federal Appeals Court in Massachusetts' ruling on the Defense of Marriage Act. Now I'm trying to find counter arguments to my points and I can't find any that don't relate to religious beliefs. Are there any? And if there aren't, can someone explain to me why the hell same-sex marriage hasn't been legalized yet?!?!