Homosexual marriage
Polygamy
Pedophilia
Bestiality
Legalized prostitution
etc.
The order in which these things become acceptable (even celebrated) does not matter. But they are all coming, and each victory for the Left makes the next topic just a little easier to get.
First they want to destroy our culture and eradicate Judeo-Christian morality from society completely, and then an immoral and decadent nation will be ready to accept the evil of Communism, the left’s ultimate goal.
A contract is a contract. None of anybody else’s business.