Gay Marriage is not an issue in my book, why shouldn't two perverts be allowed to make their own mistakes ? It's their constituitional Right - Go for it.
A. No, it isn't a constitutional right of a practitioner of a deviant sexual BEHAVIOR that attempts to mimic heterosexual sex [using the anus as an artificial vagina, or lesbians using strapon penises] to usurp state-defined qualifiers for the PRIVELEGE of marriage and
B. Utah says that the PRIVELEGE of marriage comes with the RIGHT to adopt orphans. This becomes particularly problematic when the BEHAVIORS "LGBT' glom together in a cult-like fashion and hold out one Harvey Milk as their socio-sexual messiah. Milk was into sodomizing orphaned teen boys who were thrice incapable of consent. 1. They were underaged or nearly so. 2. They were on drugs and 3. They were mentally ill.
So there are issues with gay marriage. Many many issues. And they all start from a false premise where people assume they are a race of people. They factually are not. They are an incomplete grouping of sexual deviants who have closet heterosexuality. And these are behavioral/mental issues, not genetics.