You're right about changing the channel. I can certainly do that if it annoys me.
As for my position on gay marriage, it is not just because "I don't like it.". It is a redefinition of marriage. Not merely an extension of a civil right, as some would argue. It is redefining what a marriage is. Ok, so be it. You want to redefine it to include gays, the majority rules in our society (more or less). However, I really don't see how you can stop there in a legal sense. What about a man and two women? Brother and sister? There is no limit where it could go.
"But those relationships are illegal" you might say. Well, so was gay marriage in NY yesterday. Think about this. We'll take the more absurd example, brother and sister. Or aunt/newphew. Whatever. What if it isn't incest, but for other reasons they might seek marriage. Keeping important property in the family for example, or any number of reasons I can't conceive at the moment. What I am saying is, from a legal standpoint (not a moral one), you open the door to these things by redefining marriage. With a narrow definition (one man/one woman) it is cut and dried. Start making exceptions/changes, then how do you argue about further expansion later on?