Why do we believe in things that cannot be proven?

Why do human beings believe in things that are cannot be proven? I think people like to know the answers, and want to know the answers to everything. Knowing answers to life's questions brings us a level of comfort. Not knowing the answers causes us anxiety. Where did the world come from? What happens to us after we die? What does the future hold in store for us? These types of questions cannot be proven. So what do we do? We choose to believe in something to fill the void. We believe in things that cannot be proven because it gives us peace of mind and comfort.
Where did the world come from? How was Earth formed? Was it created by God? Some might put there beliefs in the big bang theory which theorizes that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature. Other people believe that God was the creator of the universe and created earth in seven days. There are infinite explanations to questions like these. People put their faith in an answer to how we originated because not knowing is too difficult to cope with. Having an explanation to believe in makes us feel a step closer to finding the meaning in our lives.
What happen's to us after we die? Do we become part of the earth? Do our souls get reincarnated? Is there life after death? Do we go to be with God in heaven after death? Why do we want to know the answer to this question? I think we want to know because we want our lives to have a purpose. I think when someone is searching for the answer to what happen's to them after they die, they are searching for something that brings them satisfaction. We search for something that gives our existence meaning.
What does the future hold in store for us? Will I be rich? Will I find Love? Will I die young or old? People want to know what the future holds because the uncertainty makes us feel insecure. We want to be in control of our lives, and not knowing what tomorrow brings makes us uncomfortable. So people look for the answers in different places. People place their beliefs in things like tarrot cards, psychics, astrology, or they find comfort giving God control. Replacing the unknowns in our lives with these beliefs helps us cope with the uncertainty of our future.
Human beings believe in things that cannot be proven because not knowing makes us uncomfortable. A fear of the unknown makes us want to know the answers to life's questions. We want the satisfactions of knowing for ourselves how this world originated, what happens to us after we die, what the future holds in store for us, and any other unanswered questions we may have. People want to fill the gaps that not knowing causes. Putting our faith into something gives us comfort and makes us feel more content with our lives.