The reason religion is so powerful

[The Grand Nudger]

Can you be argued out of the belief that life is sacred?

Why would anyone not be? People's religious beliefs are not immutable, they're free to come and go as they please.

Note that your arguments illustrate your personal pre-conventional moral thinking. That is your intellectual relationship towards the sacred, and is not representative of me, my church, or scripture. And insofar as you impose it on me, you are creating a strawman.

Religious beliefs are those notions of the sacred which we possess as the most compelling aspects of our beliefs about anything.  There's no coming or going or pleasing, if you posess them, they go where you are, and you will be compelled to reshape the world in their image.

If you don't possess this, then perhaps you don't have religious beliefs? You would have a set of superstitions that you can be argued out of.  You would be, effectively, mouthing the words, absent understanding.

If, for example - you believe life is sacred, then you will reject anything you see as life denying and seek to remove it from the world. If, otoh, you believe that some ghost told you not to do a thing..well, sure, I think that's debatable. There wont be any trip down the rabbit hole of your cults private superstitions, though, because none is required to understand religion or ideations about the sacred. So, since you say that the sacredness of life is debatable and you've apparently had great debates about it...what does that look like? What kind of argument or evidence would that be? Just a bunch of you and your adventist buddies standing around denying the existence of the sacred, and denying the evil of it's violation? What was the most compelling argument you were ever presented with which sought to demonstrate that life was, in fact, not sacred?

It's going to be a useful argument for when we have to indoctrinate some kids to help us force a birth. Wouldn't want them to start wondering while they were tying a girl down, you know?