Pro-SSM folks often claim that gay marriage won't hurt anyone. This line from the movie Le Haine comes to mind (from the English subtitles):
"It's about a society on its way down, and as it falls, it keeps telling itself, 'So far so good... so far so good... so far so good.' It's not how you fall that matters. It's how you land."
h/t: Steve Perisho