A stretch? As Diana at ruah points out, polygamists don’t seem to think so:
Drawing the precise correlation gay-marriage supporters claim is nothing but the hysteria of bigots, one woman cheerfully used her turn at the mike to assert this bit of common logic: “If Rosie O’Donnell can adopt children and that’s legal, I mean c’mon. If two consenting adults want to have a family, three consenting adults, four… That’s fine.”
It’s coming. Polygamy and polyamory, too. In the end, marriage will mean nothing at all in society except among those who hold to the biblical definition:
?¢??Haven’t you read,?¢?? [Jesus] replied, ?¢??that at the beginning the Creator ?¢??made them male and female,?¢?? and said, ?¢??For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh?¢??? So they are no longer two, but one. Therefore what God has joined together, let man not separate.?¢??
Mt 19:4-6, NIV