With my little wisdom, both atheist and the so called spiritual beings(Christians) have one thing in common which is; the Believe in something and in Nothing.
It is also intriguing to note that the "immortal gene" remained invisible to scientific detection for much of history but was inferred to those that were paying attention.
The "immortal spirit" remains undetected but is similarly inferred to those that are paying attention.
Immortal Gene remained invisible because science was looking in the wrong place; Evolution of man. Those paying attentions i would like to refer to as the Enlightened e.g Monks, Tajs, some pastors and Imaam's as the case maybe.
I like the way you think. For the subject at hand I say to each his own as neither side matters at all. The fabric of the universe is electric and we are but flecks of the source encased in the bodily vehicles here to experience this reality. Like grains of sand spread out all over the Earth we are separate but yet one. One day in the end, we all find our way back to the source from whatever reality we came from last.
Well, i didn't want to make a biased comment as a christian who still believes in science.