Proofs take years, if not millennia, to discern. Why did the redeeming saviour of mankind came so late in the history of our species? The last 2000 years in which he has supposedly reigned king is a mere 1% of human history. I was an atheist too, then an agnostic, then a theist, following a similar trajectory to you. However, I believe in a God who created our universe over 14 billion years ago, so vast and sublime as to render most of our ponderings and self-belief utterly futile. Believers should humble themselves, recognising that we are nothing. Nothing at all in the big scheme of things. Just dust.