What difference does it make to you if the universe is cyclic or if it was spontaneously created out of nothing 14 billion years ago? Or if God created it six thousand years ago?
What difference does it make to you, in your life, if life started on Earth because aliens planted life spores here or if it was formed spontaneously in the sea somewhere? Does it make any difference to you?
Neuroscientists and Buddhists say that the self is an illusion. So what? I mean, isn't everything an illusion? The material world isn't really material; it consists of mysterious electromagnetic forces and energy. What we call reality is created in our brains, isn't it?
We are here, and we have to figure out how to survive, how to treat our friends and family, our neighbors, the animals around us, nature, and our planet.