The strongest stance is to defeat the best-case scenario. Argue why it’s wrong for two men to live out their life in monogamous love, and you have defeated every possible other scenario at the same time. Arguing against the freakiest of freak shows is at best child’s play.
No. The strongest stance is to not have your hands tied by rules such as the one you are suggesting. There is no reason to limit a discussion about sexuality and its corruption to only the so-called best-case scenario of a monogamous homosexual relationship. It is important that people begin to learn that corruption breeds more corruption and that is exactly why we see so many highly corrupted forms of sexuality marching side by side with homosexual activists as pride festivals.
Homosexuality is a corruption of natural healthy sexuality. It takes the purpose of sexuality and perverts it. Once corruptions are accepted and even considered a virtuous thing then it will lead to more corruption. Thus if we are to accept someone marrying their same gender then why not accept multiple marriage partners? Or marriage to siblings? Or marriage to animals? Or why not accept public nudity as a right? Or pedophilia?
Corruption breeds more corruption.