Just to clarify for everyone. It ALL has to do with PRIVACY:

Justice Kennedy: "The present case does not involve minors. It does not involve persons who might be injured or coerced," he said. "It does not involve public conduct or prostitution."

"The case does involve two adults who, with full and mutual consent from each other, engaged in sexual practices common to a homosexual lifestyle," he said. They "are entitled to respect for their private lives."
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist