Proof is a difficult concept for some. For starters, there is very little proof for anything. There is no proof that evolution is true, there is only evidence that things evolve. There is no proof that God exist, there is only evidence that a divine being created everything. Of course, it is also in the eye of the beholder because what one man may say is evidence that there is a God (for instance, the complex and near statistical impossibility that humans evolved from single cell organisms is something that one person would call evidence that evolution exists, while others would say that's evidence that there must be a divine being orchestrating all of this.) Logically speaking, is it worth the risk to you that Christians are right and you will be in hell for all eternity vs if Christians are wrong and we all lived and died on the same Earth?