OK, so you dislike polygamy. You don't want groups of people marrying one another.http://m.sltrib.com/sltrib/mob ile3/56282277-219/marriage-plu ral-polygamy-court.html.csp
Those who would argue against plural marriage have their work cut out for them. The Bible records at least 40 instances of the practice. Confucianism, Islam, Hinduism, and some forms of Mormonism also support it. While Catholicism bans it, other forms of Christianity are somewhat less opposed.
Plural marriage is legal in more than 150 countries, with an estimated 2 billion practitioners and 3 billion supporters. Anthropologists believe that it was the norm through most of human history, until the sixth century Christian influence of the Roman Emperor Justinian. As a North American value, plural marriage is older than monogamy. According to one study of Native American tribes, a full 84 percent of them practiced it.
Natural law arguments also fail. Biologists lately have discovered that in the animal kingdom, there is almost no such thing as monogamy.
In 1878, the Supreme Court in Reynolds v. U.S. called plural marriage "odious," and an "offence against society." In Romer v. Evans (1996), and again in Lawrence v. Texas (2003), Justice Antonin Scalia's dissent warned against legalizing same-sex marriage, noting that once the court struck down a legislature's ability to uphold "morals-based legislation," the ban against plural marriage would be the next thing to go.
Since then, TV shows such as TLC's "Sister Wives," HBO's "Big Love" and Showtime's "Polyamory" have done much to sway public opinion in favor of poly-ness, bringing the concept into the nation's collective living room and consciousness.
But stop blaming the LGBT community for what "might" happen.
Did we reject civil rights because of what "might" happen? No, we passed civil rights measures because it was the right thing to do. Has it been easy? No! Have there been problems with civil rights? Yes! But you DO NOT deny people human rights simply because you are afraid of what MIGHT happen or that there MIGHT be difficulties in the transition.