Sexual orientation is not mentioned in the Constitution, and by the Constitution, that means it is up to the states or people to decide. Again, our founding fathers executed homosexuals, so their rights were not in consideration. And supporting same-sex (not gay) marriage violates a tenet of the Christian religion that America was founded on.
You wish to dictate how other people live their lives, and that's authoritarian.
I am stating my opinion of a particular way of life. You have a different opinion. Does not mean we have to agree. And overall, yes, I think people should live their lives how they want. In this case, it is a direct assault on an institution that has been part of every single culture throughout history, and one that traditionally has been scorned and punished. Only now is it actually gaining any support, and still not that much. Telling somebody that they are wrong, and why they are wrong, is not dictating their life. They are welcome to ignore me, or show me why I am wrong. Again, and let's not start this again, it all comes down to "what do you base your beliefs on". The Morality thread has my statements, I will not respond to anything of that sort on this thread.

By the way, your English is good, are you actually Norwegian, or and English-speaker who happens to be in Norway?