““If the independent, isolated nuclear family unit is, in fact, the structure into which human beings most naturally configure themselves, why do contemporary societies and religions find it necessary to prop it up with tax breaks and supportive legislation while fiercely defending it from same-sex couples and others proposing to marry in supposedly “nontraditional” ways? One wonders, in fact, why marriage is a legal issue at all—apart from its relevance to immigration and property laws. Why would something so integral to human nature require such vigilant legal protection?””