The math is the proof. But if you like, find a friend with time on their hands. Gives them three cards, two jokers and an ace. Have them shuffle and lay out the cards face down. Choose a card. Have your friend reveal a joker from the other two cards. Reveal the third card. Do it a three hundred times. Was the card you revealed an ace more than a third of the time? Chances are very high that it will be.. Try it and see. It's an easy experiment.
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.