Why does there need to be a point to the world? Why can't things simply exist?

What is the purpose of a quasar? Why does a muon exist? I don't think those questions need to have an answer, they're just a product of "laws" of physics being what they are.

It's the same for everything here: what is our purpose? It's to live life and find happiness, to create beings that also share the capacity to live and to have them continue the system as well, or not. Why? There is no why, you either choose to or not as it is entirely up to you do decide your own purpose, if any at all. There doesn't need to be purpose, having one simply helps guide us through life in one possible trajectory.

It may seem somewhat isolated and pointless, but we create the meaning in our lives. Our families and friends exist with or without the idea of a god. There doesn't need to be a point to it all that is beyond our own enjoyment of any given experience.

As for the soul, our brains are capable of reflecting on our actions, it's an incredibly useful tool for adaptation and I believe that is the nature of our consciousness. It's the recognition of "previous" sensory input that we process. It seems like a soul, or something "outside" of the self, but it's just a facet of our brains ability to "watch" our own actions and to review external input received.