Speculation, hunches, and guesswork all lack evidence to seal the deal sort of speak.<quoted text>
Why would that a deal killer for a faith based thinker? What aspect of your belief system isn't a speculation? Do you have separate standards for your claims and for their rebuttals?
Atheist such as yourself often require concrete bomb proof scientific facts from Christians. It would only be proper etiquette to expect the same in return from Atheist.