Excellent point from Brian Mickethwait of Samizdata on the right and wrong way to argue against laws of compulsion and religious legislation. You don't want to set your atheist or agnostic disregard for the religious against their need to introduce aspects of their religion into the public sphere, or into someone else's private sphere. That makes it a religious argument - the disinterested will tune it out, leaving only the interested - those who hold one view or the other. In a popularity contest, the atheist or agnostic is always going to be out-numbered. It's much better to frame such arguments as a distinction between the many private spheres, and the public sphere.