I entered my medical training as an atheist. The complexity of a simple cell, and the complexity of the physiological pathways that are required to maintain homeostasis within a single cell, requiring relatively distant points within that cell all working in harmony, then cells making up complex organs that require positive and negative feedback loops and distant cooperation, and the symbiotic relationships among different organisms...... Intellectual honesty required me to admit that it is at least possible that there is a design to life, and therefore a designer. It's also possible that it all just happened. I consider it perfectly reasonable to admit that one does not know for sure what they don't know for sure. It was a while later when I realized that some people need to believe they have it all figured out, and that belief required faith.... and on occasion, a little resistance to admit what they don't know. It's not about donkeys, well, not only about them. If you have to oversimplify the question, maybe you aren't ready to hear the answer.