Our souls matter because they are our connection to the most profound parts of our living universe. In our culture we may feel cut off from one another, separated from nature, and terrified of our aloneness. Remembering we have a soul gives us a path to reconnect to all the things that matter to us.
I am not promoting a particular religion. Religions are only one way to recognize our souls. Having a soul may not lead to religion at all. But experiencing the world with our souls will connect us to all the glory that is around us.