“Science can’t tell me where it all came from, and there’s too much left unknown. Life is hard, so I’d rather believe in something greater and something comforting”
I don’t think Christians who say this type of thing are motivated by a deep metaphysical conviction. I think most many are motivated to believe by their own personal mortality. Life is hard, and brutal and unforgiving. And they cannot fathom life without a personal creator. Their motivation for believing is to stave off fear and uncertainty and existential decay. Not because they think it’s true. Thinking its true is both a consequence of needing that truth and a necessity of believing it.
Generally, a Christian’s belief in something is informed by the feeling of love and piety they have for the ‘God’ they love, not a rational inquiry into the nature of the object of thought in question.
So when a Christian friend tells me that nothing I say to them could ever shake the belief they have, they’re partly right. I won’t change their beliefs because their beliefs aren’t informed by facts, but rather they are informed by pious love and speculation – and sometimes facts distorted by their worldview and their desires.