The idea that (wo)men should be able to marry other (wo)men has NO precedence anywhere in Western Civilization. It is a preposterous idea that should never be given the force of law anywhere and should be forbidden everywhere. Even though religious leaders are at the forefront of this debate, is not a purely religious issue. It is a common sense issue. It's time to end this insanity.
You're wrong on this to a degree.
Western Civilization is partially based on Ancient Roman Civilization. Which was very pro-homosexual.
For example, on how Western Civilization is partially based on Ancient Roman Civilization, the T-Shirt is basically a modern day version of the Ancient Roman Tunic.