Look under that rock and you will se religion staring back at you. Abrahamic religion that is.
Why are people against gay marriage? I respect everyone's opinion, I'm just curious as I don't understand why anyone would be against it.
I'm probably going to make an enemy or two here. You have to define what "marriage" is, and why the word "marriage" is so important to some people. For a thousand years, "marriage" was the union between a man and a woman. That is a lot of tradition, custom and history. If two people of the same sex wish to commit to a long-term relationship, that is good, but it IS new and old fogeys like me find it hard to see it as marriage (with all that that entails in a mixed-sex relationship).