If you're going to wrestle people out of the jail of supernatural religion you're going to need to replace "god" with something, and "atoms" is only a part of the picture. The rest of the picture as a whole requires "infinity" to be plausible and persuasive to people of normal intelligence - and people of normal intelligence shouldn't be asked to accept "trust the scientists" or "trust the mathematicians" any more than they accept "trust the priests" as an explanation.
I don't think it's fair to make such generalizations about people. I got myself out of the jail of supernatural religion as a teenager and I don't recall I've ever felt a need to replace "god" with anything particular. I seem to live my life, try to understand what's it about but I don't have irresistible need to fill myself with any absolutes. I'm ok with the realisation that I probably will never know what's it all about and I still find joy in trying to know. I don't think I'm noticeably less or more intelligent than a normal person and yet I don't want to be persuaded into anything by anyone. I want to grasp what I call reality the best I can based on my learning and understanding and not on trust or persuasion.