I'm taking your argument first here. Here's your strawman: that I'm for a theocracy. I'm not. I'm perfectly fine with the Constitution as is.
All I need for this debate is this: there is a God. I cannot know his value on your life, or mine, and thus I cannot take your life or mine. My personal beliefs in the Christian faith are just that, personal. But the Judeo Christian respect for life came from just that--Judeo-Christianity.
It would be far more likely to see autos de fe in an atheistic society; no respect for life you see.
And the Buddhist respect for life (some won't even swat mosquitos) comes from where?