It's pointless to try to prove a position to someone who isn't willing to consider it - especially when one position relies on logic and reasoning and the other relies on emotion and magical thinking. They're just incompatible. The atheist can always simply say "I don't know yet," and the theist can always say "It doesn't need to make sense. We just have to have faith and believe it anyway. Too bad you can't understand that, you Hell-bound ****tard." There is no way to actually disprove either side.