“When I was an undergrad I came across the saying that learning a little philosophy leads you away from God, but learning a lot of philosophy leads you back. As a young man who had learned a little philosophy, I scoffed. But in later years and at least in my own case, I would come to see that it’s true.”
Edward Feser gives a potted intellectual biography, one with many parallels to my own journey. It gives a more technical explanation of why I find it difficult to take most atheism seriously.