Brian Jay Stanley makes it:
My wife and I settle our arguments by deciding whom an adverse outcome would bother more. … I apply this principle to the issue of gay rights. Discrimination hurts gays more than equality for gays hurts their opponents. At stake for gay people are their own lives; at stake for their opponents, merely others' lives. The effect on gays is material, direct, and daily; the effect on their opponents, abstract, remote, and occasional, concerning only the conformity of society to their moral beliefs. My neighbor, not me, gets to choose how to decorate his living room because he lives in it while I merely glimpse it through his window. Our rights extend only to the property line of our own life.
Sarah Bessey is on the same page:
Most of us evangelicals in Canada, regardless of personal beliefs about homosexuality, can admit that since same-sex marriage has been legalised in Canada, our society has not gone to hell in a hand basket, nor has traditional marriage, or our families been under attack. Scare tactics and wild-eyed fear-based rhetoric rarely turns out to be true. In actual practice, our society has become “live and let live” which is actually a rather tolerant and comfortable place to be.
The Dish 