re: How are people supposed to explain gay marriage to their kids?

Define agree. I don't see how my or your opinion on something as harmless as gay marriage matters when deciding if gays can do what you and I can do.

I think government should not label the contractual arrangement as "marriage" for anyone, but as long as they do, there is no reason to deny people the ability to engage in the activity. I'm married according to the church, and contractually bound to my wife according to the state, as far as I'm concerned.