Wait a minute, are you a socialist? Since when do conservatives care about societies resources based on behavior? I suppose you oppose smoker's rights, and support Bloombergian efforts to ban large sodas? After all, these lifestyle choices come at great costs to society.
Also, you can say with certainty that basically 100% of children raised by gay parents were deliberate, wanted and loved. Can you say the same for their heterosexual counterparts?
My fellow marriage equality proponents love to point to the divorce rate to opponents to show them that they've destroyed marriage from within, and thus have no grounds to prevent others from marrying. Well, the depressingly high abortion rates show that heterosexuals can't control their urges either, nor do they care for the consequence (ending a life)--that's the ultimate narcissism right there.
You should actually thank the gay rights movement. They started their crusade for marriage in the belly of the beast as far as social unrest is concerned, in the liberal strongholds of this country. The state by state campaigns, long marches, lawsuits, protests and conversations to fellow Americans, all about why marriage is so important, enduring and necessary. They're really doing your work for you, but much more effectively.