I think it was you who earlier said religious people would be able to defend their position using secular rationale. You are certainly wrong. A great number of political debates would virtually disappear without the religious component: abortion, homosexuality, contraception, possibly even healthcare. I think you would celebrate a victory on all of these fronts. You must acknowledge that many people cannot support their own political opinions without the use of religion, especially on the conservative side (religion is seen as a traditional force these days, and conservatism is all about tradition).
If you can make that acknowledgement, realize that a ban of religious arguments in public policy debate is a ban on people’s ability to shape their own government according to their beliefs. Just because they can’t talk about religion in city hall doesn’t mean people suddenly think abortions are OK. It means the representatives are forced to choose between officially baseless obstructionism or to go against the will of their constituents. Let us consider the former - the government is still dysfunctional on sensitive issues, but now it is more opaque as to why. Now consider the latter - a significant number of citizens have been effectively disenfranchised.
Assuming the latter situation, I say the burden of proof is on you who would disenfranchise the people. The principles of democracy insist that this cannot be the default outcome.
That being said, I can and have provided a justification for religion in public policy debate based on kraterocracy and majority rule as the arbiters of morality. I have also disputed the separation of church and state as interpreted by Lemon, and justified the inclusion of religion using the rest of our present constitutional principles. I have also brought up the possibility of a religiously motivated constitutional amendment. Rejecting these and asking me to convince you is like asking me to speak without opening my mouth. The best I can do is offer the following insufficient perspective:
Having presented my arguments you say it is better to eradicate physical suffering than to rely on some nonphysical realm which there is no evidence of. I ask you to consider a world where the majority of people believe in nonphysical suffering, in souls or afterlives or judgements at the hand of God. You do not believe in such things but consider a world where most people do. You are aware of the power of the brain to cause physical affects in response to imagined stimuli; see for example the sugar pill placebo. You and I can both attest to human stubbornness. So I ask you to consider a world where most people are religious and the denial of their religious agenda causes real harm to those people - frustration, despair, they feel unrepresented and repressed, and may resort to violent extremism or more likely underhanded disobedience and obstructionism in the face of perceived injustice. What then of your cost-benefit analysis? These people can’t be convinced of the error in their ways, and by barring religion from public policy debate you are inflicting real suffering upon the religious people.
This doesn’t mean the costs outweigh the benefits. It may very well be that you believe each new generation will be a little less religious; that time will heal the wounds inflicted by your policy. And you certainly think there are costs associated with religion, for example the availability of condoms and AIDS epidemiology.
~Max