It seems all the great minds ponder the very question you are asking yourself. Sir Isaac Newton's competitor with advanced Math was Gottfried Leibiz, he asked the question:
"Why is there something instead of nothing"? Gottfried Leibniz one of the greatest Math Minds in history.
What do you think he meant, was he agnostic, deist or theist? It's often forgotton the majority of scientist throughout history were either Theist or Agnostic, a few Deists were on the table but the majority were Theists, why?
Why do people think by eliminating God from the equation, your going to feel more warm and fuzzy knowing you have no purpose, all life will end one day in a few Billion years when life is exstiguished? I don't feel the love on that Billboard, no answers have been given.
To be fair, read the debate between Dr. Bart Erhman and Dr. Daniel B Wallace, you will see how all this hype of textual-variants and Erhman's hyperbole over much is addressed. I think Bart knows how to sell books and now people are attacking Bart for his other book of trying to provide evidence for some type of historical Jesus.
Can you see the bias, why is Dr. Erhman blasted for defending a historical Jesus but welcomed when he attacks the Bible? I see a agenda, it's pretty obvious! We congradulate Dr. Erhman for his attacking the New Testament, yet there are bashers who are not happy he is trying to demonstrate there was a guy named Jesus who lived in the First Century, maybe he did not have a empty tomb, perform miracles, but he did exist.