We were born in a narrow geographical and historical window - in our case, 2000-odd years which are currently being numbered according to a particular system - in part of a Western World which is, for now, dominated by the culture of one powerful and popular monotheist religion. Powerful not just in religious terms, but - crucially - economically and politically too. And it has, whatever one thinks of it, shaped an enormous amount of the art, culture and thought of this end of the world over the past 2000 years.
I always find it incredible that, given this perspective, people can find this belief system universally applicable.
If you happened to have been born a few millennia earlier/later - a mere finger-click in the billions of years of the history of the Universe - you'd believe something entirely different, because that was/will be the dominant culture.
One thing atheist and Christian can surely agree on is that Christianity has not yet peaked. In fact, it may be only just getting going. Where we'd part company is that I'd argue it will eventually fade and die, as all religions and "gods" throughout history have done.
All that has survived long-term is this planet, and this human race.