I've seen this in more than one place over time, but it was a thread by
@PopeADope which prompted this OP. Not that I'm directly addressing anything he said, or even refuting anything in particular, just that his words got my creative juices flowing, so to speak.
In terms of motivations and beliefs, I have often seen some reductionist assumptions used. This doesn't seem isolated to any particular group, either.
For me, that appears to assume a binary situation, where our motivations are driven by religious belief/faith, or by science. It's not often stated as baldly as that, and I'm not suggesting that's universal, but thought it worth throwing up an OP on this.
To me, nobody seems so simplistically driven.
It would take an extreme (dare I say broken) psyche to base decisions and morality only on religious dogma, and not reference science. Simplistically, this is a path to religious fundamentalism (at best).
But science without reference to morality is a path to eugenics, or Social Darwinism.
Happily, this doesn't seem much more than a straw-man, near as I can tell. Our motivations are never purely scientific/rationale, and nor are they purely religious. Taking it one step further, they are never even a mix of the two. There are lots of things at play when we make decisions, and in how we determine morality, and neither religion, nor science, nor BOTH can explain that fully.
In terms of an OP, I'm aware that's a little closed, but I'd be interested in any disagreements, or comments around this entire area. Consider it a loose proposition.