You know what, skyrider44? I'm going to take up your cause for you. This is my best argument against gay marriage:
1. The goal of all humans should be to be righteous in the eyes of God and united with him in death.
2. Only through the Mormon faith may people truly be righteous and all that stuff I said in #1.
3. It is the obligation of the righteous to bring others to God through the Mormon church.
4. It is the obligation of those with sin to live righteously and to be faithful to the teachings of the Mormon church.
5. Homosexuality is a sin which prevents individuals from union with God in this life or in death.
6. Thus, it is the duty of Mormons to convince people to renounce their homosexuality and practice the Mormon faith (and it is the duty of sinners to be convinced).
7. Anything that makes it easier or more acceptable to be homosexual makes it more difficult to convince homosexuals to do that stuff I said in #1 and #5.
8. Gay marriage makes it easier for people to be homosexual.
9. Thus, gay marriage should not be allowed.
This appears to be the only honest, logically consistent argument against gay marriage that I can construct. Those who are so inclined may attack my logic. Don't bother attacking the truth value of any of the premises as I obviously don't believe they are true.
However, if the truth value of the premises is assumed, it would appear to be the duty of every right-thinking individual to actively make life as difficult for homosexuals as possible.
This is so pathetically sad.