I may be using an outdated source, but having gay parents does not guarantee the children will grow up with the same "sexual deviation."
Study: Same-Sex Parents Raise Well-Adjusted Kids
I'm also going to need someone to clarify this for me, but I don't think civil unions grant the same rights as marriage. I was told it mostly applied to state laws but not federal, especially regarding taxes, social security and insurance benefits. What happens if you find a job in another state that doesn't grant the same rights?
Last and fairly off-topic: I always think about the horror stories about people marrying for money, leaving the spouse and taking half of everything they own. Or loveless couples who stay together because they don't believe in divorce. Doesn't this do more harm for the righteousness of marriage than having same sex couples marry? Shouldn't more attention be spent on fixing opposite sex marriages?