Nothing much to add about the Kalam argument. It's a claim that seems intuitive given our every day experiences, but when you break down the argument, it asserts things it cannot know.
I think the key thing to keep in mind here is the limitations of our minds to conceptualize the cosmos when we've evolved to interpret it at the macro scale at a specific point in time. Remember, our brains were built upon the need to survive, which only requires a superficial understanding of reality, and our understanding of the principle of cause of effect is built upon that need. And since the human mind evolved at a specific scale in a specific place in space-time, it is hubris for us to think all of our concepts and reasoning apply to the entire cosmos.
I think the key thing to keep in mind here is the limitations of our minds to conceptualize the cosmos when we've evolved to interpret it at the macro scale at a specific point in time. Remember, our brains were built upon the need to survive, which only requires a superficial understanding of reality, and our understanding of the principle of cause of effect is built upon that need. And since the human mind evolved at a specific scale in a specific place in space-time, it is hubris for us to think all of our concepts and reasoning apply to the entire cosmos.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell