And how do you define "religious discussion?"
For example, isn't it true that the Southern Baptist Convention has just voted for a resolution opposing in-vitro fertilization (IVF) at its recent convention? One might be glad that they voted down a motion that only men could be pastors, but only narrowly (actually, 61% voted that women shouldn't be pastors, but they needed 2/3 majority. That's pretty sad.) Are these about religion, or are they about medicine and gender? Or, perhaps not medicine, but actually politics, since stopping IVF would involve making laws respecting what people can and can not do with their bodies and in their efforts to have children?
Does religion play no part, do you think, in the animosities in the Middle East, or in the America's unyielding support for Israel?
Religion weasles its way into every aspect of human life, including food, dress, the arts, politics, international relations, science, whether or not we should make an effort to save our planet (and thus ourselves), whether we should have tatoos, or if people who are naturally "different" ought to be killed, imprisoned or just shunned.
Much of the knives out nature of American politics today is the result of religious ideologies attempting to force themselves on the body politic, viz. Christian Nationalism.
As Christopher Hitchens says, "There are four irreducible objections to religious faith: that it wholly misrepresents the origins of man and the cosmos, that because of this original error it manages to combine the maximum of servility with the maximum of solipsism, that it is both the result and the cause of dangerous sexual repression, and that it is ultimately grounded on wish-thinking."
That is how religion meddles in absolutely everything, and sadly often to the detriment of millions of people. Religion, because it believes itself inerrant without the necessity of proof, insists on its right to impose itself on everyone, whether they happen to be believers or not. "Our religion doesn't believe in same-sex marriage, so nobody, not even atheists, should be able to marry a same-sex partner." Is that a religious statement or a political one or a social one?