Ayn Rand, one of the greatest speakers on the issue of individual rights and probably the greatest defender of capitalism, was an atheist."
I would still not vote for her. Because conservative atheists, almost by definition, will not have that fundamental value for human life. If life on earth is solely about capitalism, then "might makes right" and "survival of the fittest" become governing principles. Conservative atheists could easily make a case that the elderly are unproductive drains on the economy and should be euthanized. No distinction from the Nazis there.
American-style freedom tempered by the Judeo-Christian tradition is what makes us the most generous people on earth. No one in Europe is generous anymore ... that's the Government's job. Even American Democrats today are more like Europe. Biden had a salary of $400,000 per year for decades and his charitable contributions were basically zero each year. Obama gave a tiny bit more. Contrast with President Bush and VP Cheney, who each donated healthy amounts each year ... I forget, but 10-15% of their gross income.
Our Founding Fathers were right. Freedom and capitalism are incomplete without religious faith, or at least a national consensus that God exists and that there are eternal rules to be adhered to.
Have you read her book “Capitalism: The Unknown Ideal”?