I have nothing against gays at all. It is about marriage between a man and woman nothing more. It has nothing to do with their lifestyle. For goodness sake I wish people would just stand back and use their heads. This whole idea is illogical makes no since at all.
I also, don't care what consenting adults do in their bedroom, but do believe in the idea of traditional marriage and familyhood. That institution of marriage between a man and a woman and family has served our world well. Stop trying to use logic and see below as fact!
The opposition to traditional values has a socialist (some communist) Utopian mindset which includes: GLBT sexist groups; black racist groups; radical feminist groups; immigrant nationalist/racist groups; lower income envy groups; and even white guilt ridden limousine liberals who believe they can create a better tomorrow for the above if only the fedgov taxes more.
Sorry, they all fit into the same socialist/communist category, and will never let others live in peace until they have their way on this rock. Even then, they will fight amongst themselves (witness current Europe) simply because they don't have the willingness to produce. They want...and think they deserve.
Many reasons why so many believe so, but that would be another lengthy discussion regarding the aforementioned groups above.